Finding the Third Proportional to 56,503.20 and 87,545.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,503.20 : 87,545.50 = 87,545.50 : x
2. Step 2: Convert to fraction form
   56,503.20/87,545.50 = 87,545.50/x
3. Step 3: Cross multiply
   56,503.20x = 87,545.50 × 87,545.50
4. Step 4: Simplify right side
   56,503.20x = 7,664,213,886.30
5. Step 5: Solve for x
   x = 7,664,213,886.30/56,503.20
6. Step 6: Final answer
   x = 135,642.13