Find the Third Proportional to 36, 18

Find the third proportional to 36, 18

योग

Let the required third proportional be x

∴ 36, 18, x are in continued proportion

⇒ 36 : 18 = 18 : x

⇒ 36x = 18 × 18

⇒ x = `(18xx18)/36`

⇒ x = 9

∴ Required proportional = 9

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