Finding the Third Proportional to 127,498.50 and 279,459

Step by Step Solution

1. Step 1: Write the proportion equation
   127,498.50 : 279,459 = 279,459 : x
2. Step 2: Convert to fraction form
   127,498.50/279,459 = 279,459/x
3. Step 3: Cross multiply
   127,498.50x = 279,459 × 279,459
4. Step 4: Simplify right side
   127,498.50x = 78,097,332,681
5. Step 5: Solve for x
   x = 78,097,332,681/127,498.50
6. Step 6: Final answer
   x = 612,535.31