Finding the Third Proportional to 31,155.75 and 67,570.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,155.75 : 67,570.13 = 67,570.13 : x
2. Step 2: Convert to fraction form
   31,155.75/67,570.13 = 67,570.13/x
3. Step 3: Cross multiply
   31,155.75x = 67,570.13 × 67,570.13
4. Step 4: Simplify right side
   31,155.75x = 4,565,721,792.52
5. Step 5: Solve for x
   x = 4,565,721,792.52/31,155.75
6. Step 6: Final answer
   x = 146,545.08