Finding the Third Proportional to 399,231 and 603,004.50

Step by Step Solution

1. Step 1: Write the proportion equation
   399,231 : 603,004.50 = 603,004.50 : x
2. Step 2: Convert to fraction form
   399,231/603,004.50 = 603,004.50/x
3. Step 3: Cross multiply
   399,231x = 603,004.50 × 603,004.50
4. Step 4: Simplify right side
   399,231x = 363,614,427,020.25
5. Step 5: Solve for x
   x = 363,614,427,020.25/399,231
6. Step 6: Final answer
   x = 910,787.06