Finding the Third Proportional to 424,403 and 576,730.50

Step by Step Solution

1. Step 1: Write the proportion equation
   424,403 : 576,730.50 = 576,730.50 : x
2. Step 2: Convert to fraction form
   424,403/576,730.50 = 576,730.50/x
3. Step 3: Cross multiply
   424,403x = 576,730.50 × 576,730.50
4. Step 4: Simplify right side
   424,403x = 332,618,069,630.25
5. Step 5: Solve for x
   x = 332,618,069,630.25/424,403
6. Step 6: Final answer
   x = 783,731.66