Finding the Third Proportional to 31,939.13 and 67,188.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,939.13 : 67,188.38 = 67,188.38 : x
2. Step 2: Convert to fraction form
   31,939.13/67,188.38 = 67,188.38/x
3. Step 3: Cross multiply
   31,939.13x = 67,188.38 × 67,188.38
4. Step 4: Simplify right side
   31,939.13x = 4,514,277,735.14
5. Step 5: Solve for x
   x = 4,514,277,735.14/31,939.13
6. Step 6: Final answer
   x = 141,340.06