Finding the Third Proportional to 1,299,664 and 2,703,328

Step by Step Solution

1. Step 1: Write the proportion equation
   1,299,664 : 2,703,328 = 2,703,328 : x
2. Step 2: Convert to fraction form
   1,299,664/2,703,328 = 2,703,328/x
3. Step 3: Cross multiply
   1,299,664x = 2,703,328 × 2,703,328
4. Step 4: Simplify right side
   1,299,664x = 7,307,982,275,584
5. Step 5: Solve for x
   x = 7,307,982,275,584/1,299,664
6. Step 6: Final answer
   x = 5,622,978.15