Finding the Third Proportional to 5,644,674 and 8,479,728

Step by Step Solution

1. Step 1: Write the proportion equation
   5,644,674 : 8,479,728 = 8,479,728 : x
2. Step 2: Convert to fraction form
   5,644,674/8,479,728 = 8,479,728/x
3. Step 3: Cross multiply
   5,644,674x = 8,479,728 × 8,479,728
4. Step 4: Simplify right side
   5,644,674x = 71,905,786,953,984
5. Step 5: Solve for x
   x = 71,905,786,953,984/5,644,674
6. Step 6: Final answer
   x = 12,738,696.15