Finding the Third Proportional to 87,752.50 and 128,337.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,752.50 : 128,337.50 = 128,337.50 : x
2. Step 2: Convert to fraction form
   87,752.50/128,337.50 = 128,337.50/x
3. Step 3: Cross multiply
   87,752.50x = 128,337.50 × 128,337.50
4. Step 4: Simplify right side
   87,752.50x = 16,470,513,906.25
5. Step 5: Solve for x
   x = 16,470,513,906.25/87,752.50
6. Step 6: Final answer
   x = 187,692.82