Finding the Third Proportional to 394,029 and 624,030.75

Step by Step Solution

1. Step 1: Write the proportion equation
   394,029 : 624,030.75 = 624,030.75 : x
2. Step 2: Convert to fraction form
   394,029/624,030.75 = 624,030.75/x
3. Step 3: Cross multiply
   394,029x = 624,030.75 × 624,030.75
4. Step 4: Simplify right side
   394,029x = 389,414,376,945.56
5. Step 5: Solve for x
   x = 389,414,376,945.56/394,029
6. Step 6: Final answer
   x = 988,288.62