Finding the Third Proportional to 31,939.31 and 67,188.94

Step by Step Solution

1. Step 1: Write the proportion equation
   31,939.31 : 67,188.94 = 67,188.94 : x
2. Step 2: Convert to fraction form
   31,939.31/67,188.94 = 67,188.94/x
3. Step 3: Cross multiply
   31,939.31x = 67,188.94 × 67,188.94
4. Step 4: Simplify right side
   31,939.31x = 4,514,353,322.38
5. Step 5: Solve for x
   x = 4,514,353,322.38/31,939.31
6. Step 6: Final answer
   x = 141,341.59