Question

The third proportio to the number 5 and 10 is

Answer 1

Step-by-step explanation:

Let X be the third proportional to 5 and 10, then

5, 10, 10, X are in proportion

5: 10 :: 10: X

5 × X = 10 × 10

x = 10 × 10/ 5

= 20

Hence required third proportional = 20