Finding the Third Proportional to 3,339,648 and 7,309,440

Step by Step Solution

1. Step 1: Write the proportion equation
   3,339,648 : 7,309,440 = 7,309,440 : x
2. Step 2: Convert to fraction form
   3,339,648/7,309,440 = 7,309,440/x
3. Step 3: Cross multiply
   3,339,648x = 7,309,440 × 7,309,440
4. Step 4: Simplify right side
   3,339,648x = 53,427,913,113,600
5. Step 5: Solve for x
   x = 53,427,913,113,600/3,339,648
6. Step 6: Final answer
   x = 15,998,067.20