Finding the Third Proportional to 404,712 and 613,116

Step by Step Solution

1. Step 1: Write the proportion equation
   404,712 : 613,116 = 613,116 : x
2. Step 2: Convert to fraction form
   404,712/613,116 = 613,116/x
3. Step 3: Cross multiply
   404,712x = 613,116 × 613,116
4. Step 4: Simplify right side
   404,712x = 375,911,229,456
5. Step 5: Solve for x
   x = 375,911,229,456/404,712
6. Step 6: Final answer
   x = 928,836.38