Finding the Third Proportional to 87,915 and 137,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,915 : 137,812.50 = 137,812.50 : x
2. Step 2: Convert to fraction form
   87,915/137,812.50 = 137,812.50/x
3. Step 3: Cross multiply
   87,915x = 137,812.50 × 137,812.50
4. Step 4: Simplify right side
   87,915x = 18,992,285,156.25
5. Step 5: Solve for x
   x = 18,992,285,156.25/87,915
6. Step 6: Final answer
   x = 216,030.09