Finding the Third Proportional to 31,745.25 and 67,712.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,745.25 : 67,712.63 = 67,712.63 : x
2. Step 2: Convert to fraction form
   31,745.25/67,712.63 = 67,712.63/x
3. Step 3: Cross multiply
   31,745.25x = 67,712.63 × 67,712.63
4. Step 4: Simplify right side
   31,745.25x = 4,584,999,584.39
5. Step 5: Solve for x
   x = 4,584,999,584.39/31,745.25
6. Step 6: Final answer
   x = 144,431.04