Finding the Third Proportional to 441,290 and 681,906

Step by Step Solution

1. Step 1: Write the proportion equation
   441,290 : 681,906 = 681,906 : x
2. Step 2: Convert to fraction form
   441,290/681,906 = 681,906/x
3. Step 3: Cross multiply
   441,290x = 681,906 × 681,906
4. Step 4: Simplify right side
   441,290x = 464,995,792,836
5. Step 5: Solve for x
   x = 464,995,792,836/441,290
6. Step 6: Final answer
   x = 1,053,719.31