Finding the Third Proportional to 31,939.25 and 67,189

Step by Step Solution

1. Step 1: Write the proportion equation
   31,939.25 : 67,189 = 67,189 : x
2. Step 2: Convert to fraction form
   31,939.25/67,189 = 67,189/x
3. Step 3: Cross multiply
   31,939.25x = 67,189 × 67,189
4. Step 4: Simplify right side
   31,939.25x = 4,514,361,721
5. Step 5: Solve for x
   x = 4,514,361,721/31,939.25
6. Step 6: Final answer
   x = 141,342.13