Finding the Third Proportional to 59,139.25 and 91,745.75

Step by Step Solution

1. Step 1: Write the proportion equation
   59,139.25 : 91,745.75 = 91,745.75 : x
2. Step 2: Convert to fraction form
   59,139.25/91,745.75 = 91,745.75/x
3. Step 3: Cross multiply
   59,139.25x = 91,745.75 × 91,745.75
4. Step 4: Simplify right side
   59,139.25x = 8,417,282,643.06
5. Step 5: Solve for x
   x = 8,417,282,643.06/59,139.25
6. Step 6: Final answer
   x = 142,329.88