Finding the Third Proportional to 365,499 and 548,248.50

Step by Step Solution

1. Step 1: Write the proportion equation
   365,499 : 548,248.50 = 548,248.50 : x
2. Step 2: Convert to fraction form
   365,499/548,248.50 = 548,248.50/x
3. Step 3: Cross multiply
   365,499x = 548,248.50 × 548,248.50
4. Step 4: Simplify right side
   365,499x = 300,576,417,752.25
5. Step 5: Solve for x
   x = 300,576,417,752.25/365,499
6. Step 6: Final answer
   x = 822,372.75