Finding the Third Proportional to 338,789.25 and 495,450

Step by Step Solution

1. Step 1: Write the proportion equation
   338,789.25 : 495,450 = 495,450 : x
2. Step 2: Convert to fraction form
   338,789.25/495,450 = 495,450/x
3. Step 3: Cross multiply
   338,789.25x = 495,450 × 495,450
4. Step 4: Simplify right side
   338,789.25x = 245,470,702,500
5. Step 5: Solve for x
   x = 245,470,702,500/338,789.25
6. Step 6: Final answer
   x = 724,552.81