Finding the Third Proportional to 254,856.38 and 404,885.25

Step by Step Solution

1. Step 1: Write the proportion equation
   254,856.38 : 404,885.25 = 404,885.25 : x
2. Step 2: Convert to fraction form
   254,856.38/404,885.25 = 404,885.25/x
3. Step 3: Cross multiply
   254,856.38x = 404,885.25 × 404,885.25
4. Step 4: Simplify right side
   254,856.38x = 163,932,065,667.56
5. Step 5: Solve for x
   x = 163,932,065,667.56/254,856.38
6. Step 6: Final answer
   x = 643,233.14