Finding the Third Proportional to 127,618.50 and 272,449.50

Step by Step Solution

1. Step 1: Write the proportion equation
   127,618.50 : 272,449.50 = 272,449.50 : x
2. Step 2: Convert to fraction form
   127,618.50/272,449.50 = 272,449.50/x
3. Step 3: Cross multiply
   127,618.50x = 272,449.50 × 272,449.50
4. Step 4: Simplify right side
   127,618.50x = 74,228,730,050.25
5. Step 5: Solve for x
   x = 74,228,730,050.25/127,618.50
6. Step 6: Final answer
   x = 581,645.53