Finding the Third Proportional to 1,297,920 and 2,000,256

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297,920 : 2,000,256 = 2,000,256 : x
2. Step 2: Convert to fraction form
   1,297,920/2,000,256 = 2,000,256/x
3. Step 3: Cross multiply
   1,297,920x = 2,000,256 × 2,000,256
4. Step 4: Simplify right side
   1,297,920x = 4,001,024,065,536
5. Step 5: Solve for x
   x = 4,001,024,065,536/1,297,920
6. Step 6: Final answer
   x = 3,082,643.05