Finding the Third Proportional to 4,914,660 and 7,440,678

Step by Step Solution

1. Step 1: Write the proportion equation
   4,914,660 : 7,440,678 = 7,440,678 : x
2. Step 2: Convert to fraction form
   4,914,660/7,440,678 = 7,440,678/x
3. Step 3: Cross multiply
   4,914,660x = 7,440,678 × 7,440,678
4. Step 4: Simplify right side
   4,914,660x = 55,363,689,099,684
5. Step 5: Solve for x
   x = 55,363,689,099,684/4,914,660
6. Step 6: Final answer
   x = 11,265,008.99