Finding the Third Proportional to 3,738,821 and 8,115,738

Step by Step Solution

1. Step 1: Write the proportion equation
   3,738,821 : 8,115,738 = 8,115,738 : x
2. Step 2: Convert to fraction form
   3,738,821/8,115,738 = 8,115,738/x
3. Step 3: Cross multiply
   3,738,821x = 8,115,738 × 8,115,738
4. Step 4: Simplify right side
   3,738,821x = 65,865,203,284,644
5. Step 5: Solve for x
   x = 65,865,203,284,644/3,738,821
6. Step 6: Final answer
   x = 17,616,570.38