Finding the Third Proportional to 124,978.50 and 269,919

Step by Step Solution

1. Step 1: Write the proportion equation
   124,978.50 : 269,919 = 269,919 : x
2. Step 2: Convert to fraction form
   124,978.50/269,919 = 269,919/x
3. Step 3: Cross multiply
   124,978.50x = 269,919 × 269,919
4. Step 4: Simplify right side
   124,978.50x = 72,856,266,561
5. Step 5: Solve for x
   x = 72,856,266,561/124,978.50
6. Step 6: Final answer
   x = 582,950.40