Finding the Third Proportional to 1,289,256 and 2,792,784

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289,256 : 2,792,784 = 2,792,784 : x
2. Step 2: Convert to fraction form
   1,289,256/2,792,784 = 2,792,784/x
3. Step 3: Cross multiply
   1,289,256x = 2,792,784 × 2,792,784
4. Step 4: Simplify right side
   1,289,256x = 7,799,642,470,656
5. Step 5: Solve for x
   x = 7,799,642,470,656/1,289,256
6. Step 6: Final answer
   x = 6,049,723.62