Finding the Third Proportional to 3,878,886 and 8,159,755

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878,886 : 8,159,755 = 8,159,755 : x
2. Step 2: Convert to fraction form
   3,878,886/8,159,755 = 8,159,755/x
3. Step 3: Cross multiply
   3,878,886x = 8,159,755 × 8,159,755
4. Step 4: Simplify right side
   3,878,886x = 66,581,601,660,025
5. Step 5: Solve for x
   x = 66,581,601,660,025/3,878,886
6. Step 6: Final answer
   x = 17,165,134.95