Finding the Third Proportional to 3,678,914 and 8,042,116

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678,914 : 8,042,116 = 8,042,116 : x
2. Step 2: Convert to fraction form
   3,678,914/8,042,116 = 8,042,116/x
3. Step 3: Cross multiply
   3,678,914x = 8,042,116 × 8,042,116
4. Step 4: Simplify right side
   3,678,914x = 64,675,629,757,456
5. Step 5: Solve for x
   x = 64,675,629,757,456/3,678,914
6. Step 6: Final answer
   x = 17,580,087.43