Finding the Third Proportional to 255,325 and 404,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   255,325 : 404,108.50 = 404,108.50 : x
2. Step 2: Convert to fraction form
   255,325/404,108.50 = 404,108.50/x
3. Step 3: Cross multiply
   255,325x = 404,108.50 × 404,108.50
4. Step 4: Simplify right side
   255,325x = 163,303,679,772.25
5. Step 5: Solve for x
   x = 163,303,679,772.25/255,325
6. Step 6: Final answer
   x = 639,591.42