Finding the Third Proportional to 328,431 and 494,104.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,431 : 494,104.50 = 494,104.50 : x
2. Step 2: Convert to fraction form
   328,431/494,104.50 = 494,104.50/x
3. Step 3: Cross multiply
   328,431x = 494,104.50 × 494,104.50
4. Step 4: Simplify right side
   328,431x = 244,139,256,920.25
5. Step 5: Solve for x
   x = 244,139,256,920.25/328,431
6. Step 6: Final answer
   x = 743,350.22