Finding the Third Proportional to 6,978,728 and 10,426,266

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978,728 : 10,426,266 = 10,426,266 : x
2. Step 2: Convert to fraction form
   6,978,728/10,426,266 = 10,426,266/x
3. Step 3: Cross multiply
   6,978,728x = 10,426,266 × 10,426,266
4. Step 4: Simplify right side
   6,978,728x = 108,707,022,702,756
5. Step 5: Solve for x
   x = 108,707,022,702,756/6,978,728
6. Step 6: Final answer
   x = 15,576,910.68