Finding the Third Proportional to 1,279,636 and 2,800,328

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279,636 : 2,800,328 = 2,800,328 : x
2. Step 2: Convert to fraction form
   1,279,636/2,800,328 = 2,800,328/x
3. Step 3: Cross multiply
   1,279,636x = 2,800,328 × 2,800,328
4. Step 4: Simplify right side
   1,279,636x = 7,841,836,907,584
5. Step 5: Solve for x
   x = 7,841,836,907,584/1,279,636
6. Step 6: Final answer
   x = 6,128,177.78