Finding the Third Proportional to 1,378,792 and 1,985,864

Step by Step Solution

1. Step 1: Write the proportion equation
   1,378,792 : 1,985,864 = 1,985,864 : x
2. Step 2: Convert to fraction form
   1,378,792/1,985,864 = 1,985,864/x
3. Step 3: Cross multiply
   1,378,792x = 1,985,864 × 1,985,864
4. Step 4: Simplify right side
   1,378,792x = 3,943,655,826,496
5. Step 5: Solve for x
   x = 3,943,655,826,496/1,378,792
6. Step 6: Final answer
   x = 2,860,225.35