Finding the Third Proportional to 3,952.50 and 8,517.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,952.50 : 8,517.50 = 8,517.50 : x
2. Step 2: Convert to fraction form
   3,952.50/8,517.50 = 8,517.50/x
3. Step 3: Cross multiply
   3,952.50x = 8,517.50 × 8,517.50
4. Step 4: Simplify right side
   3,952.50x = 72,547,806.25
5. Step 5: Solve for x
   x = 72,547,806.25/3,952.50
6. Step 6: Final answer
   x = 18,354.92