Finding the Third Proportional to 1,288,386 and 2,910,816

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288,386 : 2,910,816 = 2,910,816 : x
2. Step 2: Convert to fraction form
   1,288,386/2,910,816 = 2,910,816/x
3. Step 3: Cross multiply
   1,288,386x = 2,910,816 × 2,910,816
4. Step 4: Simplify right side
   1,288,386x = 8,472,849,785,856
5. Step 5: Solve for x
   x = 8,472,849,785,856/1,288,386
6. Step 6: Final answer
   x = 6,576,328.67