Finding the Third Proportional to 8,496,878 and 12,815,826

Step by Step Solution

1. Step 1: Write the proportion equation
   8,496,878 : 12,815,826 = 12,815,826 : x
2. Step 2: Convert to fraction form
   8,496,878/12,815,826 = 12,815,826/x
3. Step 3: Cross multiply
   8,496,878x = 12,815,826 × 12,815,826
4. Step 4: Simplify right side
   8,496,878x = 164,245,396,062,276
5. Step 5: Solve for x
   x = 164,245,396,062,276/8,496,878
6. Step 6: Final answer
   x = 19,330,087.60