Finding the Third Proportional to 1,280,256 and 2,758,800

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280,256 : 2,758,800 = 2,758,800 : x
2. Step 2: Convert to fraction form
   1,280,256/2,758,800 = 2,758,800/x
3. Step 3: Cross multiply
   1,280,256x = 2,758,800 × 2,758,800
4. Step 4: Simplify right side
   1,280,256x = 7,610,977,440,000
5. Step 5: Solve for x
   x = 7,610,977,440,000/1,280,256
6. Step 6: Final answer
   x = 5,944,887.15