Finding the Third Proportional to 56,385 and 84,403.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,385 : 84,403.50 = 84,403.50 : x
2. Step 2: Convert to fraction form
   56,385/84,403.50 = 84,403.50/x
3. Step 3: Cross multiply
   56,385x = 84,403.50 × 84,403.50
4. Step 4: Simplify right side
   56,385x = 7,123,950,812.25
5. Step 5: Solve for x
   x = 7,123,950,812.25/56,385
6. Step 6: Final answer
   x = 126,344.79