Finding the Third Proportional to 1,279,712 and 2,800,480

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279,712 : 2,800,480 = 2,800,480 : x
2. Step 2: Convert to fraction form
   1,279,712/2,800,480 = 2,800,480/x
3. Step 3: Cross multiply
   1,279,712x = 2,800,480 × 2,800,480
4. Step 4: Simplify right side
   1,279,712x = 7,842,688,230,400
5. Step 5: Solve for x
   x = 7,842,688,230,400/1,279,712
6. Step 6: Final answer
   x = 6,128,479.09