Finding the Third Proportional to 254,874 and 404,908

Step by Step Solution

1. Step 1: Write the proportion equation
   254,874 : 404,908 = 404,908 : x
2. Step 2: Convert to fraction form
   254,874/404,908 = 404,908/x
3. Step 3: Cross multiply
   254,874x = 404,908 × 404,908
4. Step 4: Simplify right side
   254,874x = 163,950,488,464
5. Step 5: Solve for x
   x = 163,950,488,464/254,874
6. Step 6: Final answer
   x = 643,260.94