Finding the Third Proportional to 31,252.78 and 67,392.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,252.78 : 67,392.28 = 67,392.28 : x
2. Step 2: Convert to fraction form
   31,252.78/67,392.28 = 67,392.28/x
3. Step 3: Cross multiply
   31,252.78x = 67,392.28 × 67,392.28
4. Step 4: Simplify right side
   31,252.78x = 4,541,719,572.08
5. Step 5: Solve for x
   x = 4,541,719,572.08/31,252.78
6. Step 6: Final answer
   x = 145,322.09