Finding the Third Proportional to 57,331 and 86,861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,331 : 86,861.50 = 86,861.50 : x
2. Step 2: Convert to fraction form
   57,331/86,861.50 = 86,861.50/x
3. Step 3: Cross multiply
   57,331x = 86,861.50 × 86,861.50
4. Step 4: Simplify right side
   57,331x = 7,544,920,182.25
5. Step 5: Solve for x
   x = 7,544,920,182.25/57,331
6. Step 6: Final answer
   x = 131,602.80