Question

What is the third proportional to 7 and 21​

Answer 1

Answer:

The third proportional to 7 and 21 is 63..

Step-by-step explanation:

Let the number be x.

7 : 21 :: 21 : x

Product of mean = product of extreme..

21* 21 = 441

7x = 441

X = 441 / 7

X = 63

Answer 2

Answer:

its correct answer

Step-by-step explanation:

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