Finding the Third Proportional to 254,354.55 and 404,883.56

Step by Step Solution

1. Step 1: Write the proportion equation
   254,354.55 : 404,883.56 = 404,883.56 : x
2. Step 2: Convert to fraction form
   254,354.55/404,883.56 = 404,883.56/x
3. Step 3: Cross multiply
   254,354.55x = 404,883.56 × 404,883.56
4. Step 4: Simplify right side
   254,354.55x = 163,930,699,182.69
5. Step 5: Solve for x
   x = 163,930,699,182.69/254,354.55
6. Step 6: Final answer
   x = 644,496.81