Finding the Third Proportional to 8,408,616 and 12,822,888

Step by Step Solution

1. Step 1: Write the proportion equation
   8,408,616 : 12,822,888 = 12,822,888 : x
2. Step 2: Convert to fraction form
   8,408,616/12,822,888 = 12,822,888/x
3. Step 3: Cross multiply
   8,408,616x = 12,822,888 × 12,822,888
4. Step 4: Simplify right side
   8,408,616x = 164,426,456,660,544
5. Step 5: Solve for x
   x = 164,426,456,660,544/8,408,616
6. Step 6: Final answer
   x = 19,554,520.82