AS PRACTISED BY THE ARABS. 97 



(f. Add together in the Rank of the Cube this 22,590 and 220,750, 

 and write the sum 243,340 opposite to and immediately above them. 



/. Transfer this 243,340 to the right hand three places. This 243,340 

 so transferred, is now the upper number in the Rank of the Cube. 



k'. Add 3, the second found figure of the Root, to 132, the upper num- 

 ber in the Rank of the Latus by Art. 3',) and write the sum 135 opposite 

 to and immediately above it. This 135 is now the upper number in the 

 Rank of the Latus. 



X r . Multiply 3, the second found figure of the Root, into this 135, and 

 write the product 405 in the Rank of the Square opposite to and imme- 

 diately above 7,530, the upper number in that Rank by Art. s'.) 



(ju f . Add together in the Rank of the Square this 405 and 7,530, and 

 write the sum 7,935 opposite to and immediately above them. 



/. Transfer this 7,935 to the right hand four places. This 7,935 so 

 transferred, is now the upper number in the Rank of the Square. 



£'. Add 3, the second found figure of the Root, to 135, theupper num- 

 ber in the Rank of the Latus by Art. *',) and write the sum 138 opposite to 

 and immediately above the 135. 



g\ Transfer this 138 to the right hand five places. This 138 so trans- 

 ferred, is now the upper number in the the Rank of the Latus. 



Then seek the greatest number with the following conditions — 



1'. That if this sought number be written in the interstice to the right 

 hand of 138, the upper number by Art. §' in the Rank of the Latus. 



