Finding the Third Proportional to 615,449 and 1,279,822

Step by Step Solution

1. Step 1: Write the proportion equation
   615,449 : 1,279,822 = 1,279,822 : x
2. Step 2: Convert to fraction form
   615,449/1,279,822 = 1,279,822/x
3. Step 3: Cross multiply
   615,449x = 1,279,822 × 1,279,822
4. Step 4: Simplify right side
   615,449x = 1,637,944,351,684
5. Step 5: Solve for x
   x = 1,637,944,351,684/615,449
6. Step 6: Final answer
   x = 2,661,381.12