Finding the Third Proportional to 2,618,810 and 5,637,856

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618,810 : 5,637,856 = 5,637,856 : x
2. Step 2: Convert to fraction form
   2,618,810/5,637,856 = 5,637,856/x
3. Step 3: Cross multiply
   2,618,810x = 5,637,856 × 5,637,856
4. Step 4: Simplify right side
   2,618,810x = 31,785,420,276,736
5. Step 5: Solve for x
   x = 31,785,420,276,736/2,618,810
6. Step 6: Final answer
   x = 12,137,352.57