Finding the Third Proportional to 1,287,792 and 2,776,422

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,792 : 2,776,422 = 2,776,422 : x
2. Step 2: Convert to fraction form
   1,287,792/2,776,422 = 2,776,422/x
3. Step 3: Cross multiply
   1,287,792x = 2,776,422 × 2,776,422
4. Step 4: Simplify right side
   1,287,792x = 7,708,519,122,084
5. Step 5: Solve for x
   x = 7,708,519,122,084/1,287,792
6. Step 6: Final answer
   x = 5,985,841.75