Finding the Third Proportional to 1,258,792 and 1,898,638

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258,792 : 1,898,638 = 1,898,638 : x
2. Step 2: Convert to fraction form
   1,258,792/1,898,638 = 1,898,638/x
3. Step 3: Cross multiply
   1,258,792x = 1,898,638 × 1,898,638
4. Step 4: Simplify right side
   1,258,792x = 3,604,826,255,044
5. Step 5: Solve for x
   x = 3,604,826,255,044/1,258,792
6. Step 6: Final answer
   x = 2,863,718.75