Finding the Third Proportional to 38,715 and 57,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   38,715 : 57,920.50 = 57,920.50 : x
2. Step 2: Convert to fraction form
   38,715/57,920.50 = 57,920.50/x
3. Step 3: Cross multiply
   38,715x = 57,920.50 × 57,920.50
4. Step 4: Simplify right side
   38,715x = 3,354,784,320.25
5. Step 5: Solve for x
   x = 3,354,784,320.25/38,715
6. Step 6: Final answer
   x = 86,653.35