Finding the Third Proportional to 103,689 and 155,499

Step by Step Solution

1. Step 1: Write the proportion equation
   103,689 : 155,499 = 155,499 : x
2. Step 2: Convert to fraction form
   103,689/155,499 = 155,499/x
3. Step 3: Cross multiply
   103,689x = 155,499 × 155,499
4. Step 4: Simplify right side
   103,689x = 24,179,939,001
5. Step 5: Solve for x
   x = 24,179,939,001/103,689
6. Step 6: Final answer
   x = 233,196.76