Finding the Third Proportional to 260,939.38 and 404,035

Step by Step Solution

1. Step 1: Write the proportion equation
   260,939.38 : 404,035 = 404,035 : x
2. Step 2: Convert to fraction form
   260,939.38/404,035 = 404,035/x
3. Step 3: Cross multiply
   260,939.38x = 404,035 × 404,035
4. Step 4: Simplify right side
   260,939.38x = 163,244,281,225
5. Step 5: Solve for x
   x = 163,244,281,225/260,939.38
6. Step 6: Final answer
   x = 625,602.33