Finding the Third Proportional to 1,279,810 and 2,800,644

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279,810 : 2,800,644 = 2,800,644 : x
2. Step 2: Convert to fraction form
   1,279,810/2,800,644 = 2,800,644/x
3. Step 3: Cross multiply
   1,279,810x = 2,800,644 × 2,800,644
4. Step 4: Simplify right side
   1,279,810x = 7,843,606,814,736
5. Step 5: Solve for x
   x = 7,843,606,814,736/1,279,810
6. Step 6: Final answer
   x = 6,128,727.56