Finding the Third Proportional to 408.38 and 585.38

Step by Step Solution

1. Step 1: Write the proportion equation
   408.38 : 585.38 = 585.38 : x
2. Step 2: Convert to fraction form
   408.38/585.38 = 585.38/x
3. Step 3: Cross multiply
   408.38x = 585.38 × 585.38
4. Step 4: Simplify right side
   408.38x = 342,663.89
5. Step 5: Solve for x
   x = 342,663.89/408.38
6. Step 6: Final answer
   x = 839.09