Finding the Third Proportional to 5,644,728 and 8,479,808

Step by Step Solution

1. Step 1: Write the proportion equation
   5,644,728 : 8,479,808 = 8,479,808 : x
2. Step 2: Convert to fraction form
   5,644,728/8,479,808 = 8,479,808/x
3. Step 3: Cross multiply
   5,644,728x = 8,479,808 × 8,479,808
4. Step 4: Simplify right side
   5,644,728x = 71,907,143,716,864
5. Step 5: Solve for x
   x = 71,907,143,716,864/5,644,728
6. Step 6: Final answer
   x = 12,738,814.65