Finding the Third Proportional to 3,959,215 and 6,120,768

Step by Step Solution

1. Step 1: Write the proportion equation
   3,959,215 : 6,120,768 = 6,120,768 : x
2. Step 2: Convert to fraction form
   3,959,215/6,120,768 = 6,120,768/x
3. Step 3: Cross multiply
   3,959,215x = 6,120,768 × 6,120,768
4. Step 4: Simplify right side
   3,959,215x = 37,463,800,909,824
5. Step 5: Solve for x
   x = 37,463,800,909,824/3,959,215
6. Step 6: Final answer
   x = 9,462,431.55