Finding the Third Proportional to 498,443.50 and 773,240.50

Step by Step Solution

1. Step 1: Write the proportion equation
   498,443.50 : 773,240.50 = 773,240.50 : x
2. Step 2: Convert to fraction form
   498,443.50/773,240.50 = 773,240.50/x
3. Step 3: Cross multiply
   498,443.50x = 773,240.50 × 773,240.50
4. Step 4: Simplify right side
   498,443.50x = 597,900,870,840.25
5. Step 5: Solve for x
   x = 597,900,870,840.25/498,443.50
6. Step 6: Final answer
   x = 1,199,535.90