Finding the Third Proportional to 394,050 and 624,064.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,050 : 624,064.50 = 624,064.50 : x
2. Step 2: Convert to fraction form
   394,050/624,064.50 = 624,064.50/x
3. Step 3: Cross multiply
   394,050x = 624,064.50 × 624,064.50
4. Step 4: Simplify right side
   394,050x = 389,456,500,160.25
5. Step 5: Solve for x
   x = 389,456,500,160.25/394,050
6. Step 6: Final answer
   x = 988,342.85