Finding the Third Proportional to 1,279,644 and 2,800,344

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279,644 : 2,800,344 = 2,800,344 : x
2. Step 2: Convert to fraction form
   1,279,644/2,800,344 = 2,800,344/x
3. Step 3: Cross multiply
   1,279,644x = 2,800,344 × 2,800,344
4. Step 4: Simplify right side
   1,279,644x = 7,841,926,518,336
5. Step 5: Solve for x
   x = 7,841,926,518,336/1,279,644
6. Step 6: Final answer
   x = 6,128,209.50