Finding the Third Proportional to 615,442 and 1,279,808

Step by Step Solution

1. Step 1: Write the proportion equation
   615,442 : 1,279,808 = 1,279,808 : x
2. Step 2: Convert to fraction form
   615,442/1,279,808 = 1,279,808/x
3. Step 3: Cross multiply
   615,442x = 1,279,808 × 1,279,808
4. Step 4: Simplify right side
   615,442x = 1,637,908,516,864
5. Step 5: Solve for x
   x = 1,637,908,516,864/615,442
6. Step 6: Final answer
   x = 2,661,353.17