Finding the Third Proportional to 3,815,658 and 8,293,878

Step by Step Solution

1. Step 1: Write the proportion equation
   3,815,658 : 8,293,878 = 8,293,878 : x
2. Step 2: Convert to fraction form
   3,815,658/8,293,878 = 8,293,878/x
3. Step 3: Cross multiply
   3,815,658x = 8,293,878 × 8,293,878
4. Step 4: Simplify right side
   3,815,658x = 68,788,412,278,884
5. Step 5: Solve for x
   x = 68,788,412,278,884/3,815,658
6. Step 6: Final answer
   x = 18,027,929.20