Finding the Third Proportional to 338,785 and 495,443

Step by Step Solution

1. Step 1: Write the proportion equation
   338,785 : 495,443 = 495,443 : x
2. Step 2: Convert to fraction form
   338,785/495,443 = 495,443/x
3. Step 3: Cross multiply
   338,785x = 495,443 × 495,443
4. Step 4: Simplify right side
   338,785x = 245,463,766,249
5. Step 5: Solve for x
   x = 245,463,766,249/338,785
6. Step 6: Final answer
   x = 724,541.42