Finding the Third Proportional to 254,370 and 404,908.50

Step by Step Solution

1. Step 1: Write the proportion equation
   254,370 : 404,908.50 = 404,908.50 : x
2. Step 2: Convert to fraction form
   254,370/404,908.50 = 404,908.50/x
3. Step 3: Cross multiply
   254,370x = 404,908.50 × 404,908.50
4. Step 4: Simplify right side
   254,370x = 163,950,893,372.25
5. Step 5: Solve for x
   x = 163,950,893,372.25/254,370
6. Step 6: Final answer
   x = 644,537.07