Finding the Third Proportional to 71,708 and 111,398

Step by Step Solution

1. Step 1: Write the proportion equation
   71,708 : 111,398 = 111,398 : x
2. Step 2: Convert to fraction form
   71,708/111,398 = 111,398/x
3. Step 3: Cross multiply
   71,708x = 111,398 × 111,398
4. Step 4: Simplify right side
   71,708x = 12,409,514,404
5. Step 5: Solve for x
   x = 12,409,514,404/71,708
6. Step 6: Final answer
   x = 173,056.21