Finding the Third Proportional to 404,622 and 582,831

Step by Step Solution

1. Step 1: Write the proportion equation
   404,622 : 582,831 = 582,831 : x
2. Step 2: Convert to fraction form
   404,622/582,831 = 582,831/x
3. Step 3: Cross multiply
   404,622x = 582,831 × 582,831
4. Step 4: Simplify right side
   404,622x = 339,691,974,561
5. Step 5: Solve for x
   x = 339,691,974,561/404,622
6. Step 6: Final answer
   x = 839,529.18