What is the third proportional to 10 and 25?
62.5
Given:
The numbers are 10 and 25
Used formula:
a : b :: c : d
⇒ a/b = c/d
Calculation:
Let the third proportional x be
⇒ 10/25 = 25/x
⇒ 10 = 625/x
∴ x = 625/10 = 62.5
∴ The third proportional of the two numbers 10 and 25 is 62.5.
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