Finding the Third Proportional to 81,988 and 123,555

Step by Step Solution

1. Step 1: Write the proportion equation
   81,988 : 123,555 = 123,555 : x
2. Step 2: Convert to fraction form
   81,988/123,555 = 123,555/x
3. Step 3: Cross multiply
   81,988x = 123,555 × 123,555
4. Step 4: Simplify right side
   81,988x = 15,265,838,025
5. Step 5: Solve for x
   x = 15,265,838,025/81,988
6. Step 6: Final answer
   x = 186,196.00