Finding the Third Proportional to 498,445 and 783,379.50

Step by Step Solution

1. Step 1: Write the proportion equation
   498,445 : 783,379.50 = 783,379.50 : x
2. Step 2: Convert to fraction form
   498,445/783,379.50 = 783,379.50/x
3. Step 3: Cross multiply
   498,445x = 783,379.50 × 783,379.50
4. Step 4: Simplify right side
   498,445x = 613,683,441,020.25
5. Step 5: Solve for x
   x = 613,683,441,020.25/498,445
6. Step 6: Final answer
   x = 1,231,195.90