Finding the Third Proportional to 394,048.50 and 624,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,048.50 : 624,061.50 = 624,061.50 : x
2. Step 2: Convert to fraction form
   394,048.50/624,061.50 = 624,061.50/x
3. Step 3: Cross multiply
   394,048.50x = 624,061.50 × 624,061.50
4. Step 4: Simplify right side
   394,048.50x = 389,452,755,782.25
5. Step 5: Solve for x
   x = 389,452,755,782.25/394,048.50
6. Step 6: Final answer
   x = 988,337.11