Finding the Third Proportional to 54,310.50 and 76,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,310.50 : 76,909.50 = 76,909.50 : x
2. Step 2: Convert to fraction form
   54,310.50/76,909.50 = 76,909.50/x
3. Step 3: Cross multiply
   54,310.50x = 76,909.50 × 76,909.50
4. Step 4: Simplify right side
   54,310.50x = 5,915,071,190.25
5. Step 5: Solve for x
   x = 5,915,071,190.25/54,310.50
6. Step 6: Final answer
   x = 108,912.11