Finding the Third Proportional to 31,243.25 and 67,103.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,243.25 : 67,103.75 = 67,103.75 : x
2. Step 2: Convert to fraction form
   31,243.25/67,103.75 = 67,103.75/x
3. Step 3: Cross multiply
   31,243.25x = 67,103.75 × 67,103.75
4. Step 4: Simplify right side
   31,243.25x = 4,502,913,264.06
5. Step 5: Solve for x
   x = 4,502,913,264.06/31,243.25
6. Step 6: Final answer
   x = 144,124.36