Finding the Third Proportional to 1,258,786 and 1,898,629

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258,786 : 1,898,629 = 1,898,629 : x
2. Step 2: Convert to fraction form
   1,258,786/1,898,629 = 1,898,629/x
3. Step 3: Cross multiply
   1,258,786x = 1,898,629 × 1,898,629
4. Step 4: Simplify right side
   1,258,786x = 3,604,792,079,641
5. Step 5: Solve for x
   x = 3,604,792,079,641/1,258,786
6. Step 6: Final answer
   x = 2,863,705.25