Finding the Third Proportional to 56,632.50 and 85,380.75

Step by Step Solution

1. Step 1: Write the proportion equation
   56,632.50 : 85,380.75 = 85,380.75 : x
2. Step 2: Convert to fraction form
   56,632.50/85,380.75 = 85,380.75/x
3. Step 3: Cross multiply
   56,632.50x = 85,380.75 × 85,380.75
4. Step 4: Simplify right side
   56,632.50x = 7,289,872,470.56
5. Step 5: Solve for x
   x = 7,289,872,470.56/56,632.50
6. Step 6: Final answer
   x = 128,722.42