Finding the Third Proportional to 57,730.50 and 90,240.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,730.50 : 90,240.75 = 90,240.75 : x
2. Step 2: Convert to fraction form
   57,730.50/90,240.75 = 90,240.75/x
3. Step 3: Cross multiply
   57,730.50x = 90,240.75 × 90,240.75
4. Step 4: Simplify right side
   57,730.50x = 8,143,392,960.56
5. Step 5: Solve for x
   x = 8,143,392,960.56/57,730.50
6. Step 6: Final answer
   x = 141,058.76