Finding the Third Proportional to 127,291.50 and 279,045

Step by Step Solution

1. Step 1: Write the proportion equation
   127,291.50 : 279,045 = 279,045 : x
2. Step 2: Convert to fraction form
   127,291.50/279,045 = 279,045/x
3. Step 3: Cross multiply
   127,291.50x = 279,045 × 279,045
4. Step 4: Simplify right side
   127,291.50x = 77,866,112,025
5. Step 5: Solve for x
   x = 77,866,112,025/127,291.50
6. Step 6: Final answer
   x = 611,714.94