Finding the Third Proportional to 1,287,540 and 2,790,108

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,540 : 2,790,108 = 2,790,108 : x
2. Step 2: Convert to fraction form
   1,287,540/2,790,108 = 2,790,108/x
3. Step 3: Cross multiply
   1,287,540x = 2,790,108 × 2,790,108
4. Step 4: Simplify right side
   1,287,540x = 7,784,702,651,664
5. Step 5: Solve for x
   x = 7,784,702,651,664/1,287,540
6. Step 6: Final answer
   x = 6,046,183.15