Finding the Third Proportional to 59,712.50 and 90,240.75

Step by Step Solution

1. Step 1: Write the proportion equation
   59,712.50 : 90,240.75 = 90,240.75 : x
2. Step 2: Convert to fraction form
   59,712.50/90,240.75 = 90,240.75/x
3. Step 3: Cross multiply
   59,712.50x = 90,240.75 × 90,240.75
4. Step 4: Simplify right side
   59,712.50x = 8,143,392,960.56
5. Step 5: Solve for x
   x = 8,143,392,960.56/59,712.50
6. Step 6: Final answer
   x = 136,376.69