Finding the Third Proportional to 31,124 and 67,188

Step by Step Solution

1. Step 1: Write the proportion equation
   31,124 : 67,188 = 67,188 : x
2. Step 2: Convert to fraction form
   31,124/67,188 = 67,188/x
3. Step 3: Cross multiply
   31,124x = 67,188 × 67,188
4. Step 4: Simplify right side
   31,124x = 4,514,227,344
5. Step 5: Solve for x
   x = 4,514,227,344/31,124
6. Step 6: Final answer
   x = 145,040.08