#### Answer

The proportion is below.

#### Work Step by Step

Since they are similar triangles, corresponding sides are proportional. Thus:
$\frac{VT}{TS} = \frac{TS}{RT} \\ VT\cdot RT = TS \cdot TS$
Thus, we see that TS is the geometric mean.

Published by
Cengage

ISBN 10:
978-1-337-61408-5

ISBN 13:
978-1-33761-408-5

The proportion is below.

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