Finding the Third Proportional to 59,139.75 and 91,746.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,139.75 : 91,746.50 = 91,746.50 : x
2. Step 2: Convert to fraction form
   59,139.75/91,746.50 = 91,746.50/x
3. Step 3: Cross multiply
   59,139.75x = 91,746.50 × 91,746.50
4. Step 4: Simplify right side
   59,139.75x = 8,417,420,262.25
5. Step 5: Solve for x
   x = 8,417,420,262.25/59,139.75
6. Step 6: Final answer
   x = 142,331.01