Finding the Third Proportional to 59,129.50 and 86,493.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,129.50 : 86,493.50 = 86,493.50 : x
2. Step 2: Convert to fraction form
   59,129.50/86,493.50 = 86,493.50/x
3. Step 3: Cross multiply
   59,129.50x = 86,493.50 × 86,493.50
4. Step 4: Simplify right side
   59,129.50x = 7,481,125,542.25
5. Step 5: Solve for x
   x = 7,481,125,542.25/59,129.50
6. Step 6: Final answer
   x = 126,521.04