Finding the Third Proportional to 1,288,928 and 2,799,296

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288,928 : 2,799,296 = 2,799,296 : x
2. Step 2: Convert to fraction form
   1,288,928/2,799,296 = 2,799,296/x
3. Step 3: Cross multiply
   1,288,928x = 2,799,296 × 2,799,296
4. Step 4: Simplify right side
   1,288,928x = 7,836,058,095,616
5. Step 5: Solve for x
   x = 7,836,058,095,616/1,288,928
6. Step 6: Final answer
   x = 6,079,515.76