Finding the Third Proportional to 254,355.75 and 404,887.50

Step by Step Solution

1. Step 1: Write the proportion equation
   254,355.75 : 404,887.50 = 404,887.50 : x
2. Step 2: Convert to fraction form
   254,355.75/404,887.50 = 404,887.50/x
3. Step 3: Cross multiply
   254,355.75x = 404,887.50 × 404,887.50
4. Step 4: Simplify right side
   254,355.75x = 163,933,887,656.25
5. Step 5: Solve for x
   x = 163,933,887,656.25/254,355.75
6. Step 6: Final answer
   x = 644,506.32