Finding the Third Proportional to 615,446 and 1,279,816

Step by Step Solution

1. Step 1: Write the proportion equation
   615,446 : 1,279,816 = 1,279,816 : x
2. Step 2: Convert to fraction form
   615,446/1,279,816 = 1,279,816/x
3. Step 3: Cross multiply
   615,446x = 1,279,816 × 1,279,816
4. Step 4: Simplify right side
   615,446x = 1,637,928,993,856
5. Step 5: Solve for x
   x = 1,637,928,993,856/615,446
6. Step 6: Final answer
   x = 2,661,369.14