Finding the Third Proportional to 254,372.50 and 404,908

Step by Step Solution

1. Step 1: Write the proportion equation
   254,372.50 : 404,908 = 404,908 : x
2. Step 2: Convert to fraction form
   254,372.50/404,908 = 404,908/x
3. Step 3: Cross multiply
   254,372.50x = 404,908 × 404,908
4. Step 4: Simplify right side
   254,372.50x = 163,950,488,464
5. Step 5: Solve for x
   x = 163,950,488,464/254,372.50
6. Step 6: Final answer
   x = 644,529.14