Finding the Third Proportional to 3,968,774 and 8,414,436

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968,774 : 8,414,436 = 8,414,436 : x
2. Step 2: Convert to fraction form
   3,968,774/8,414,436 = 8,414,436/x
3. Step 3: Cross multiply
   3,968,774x = 8,414,436 × 8,414,436
4. Step 4: Simplify right side
   3,968,774x = 70,802,733,198,096
5. Step 5: Solve for x
   x = 70,802,733,198,096/3,968,774
6. Step 6: Final answer
   x = 17,839,950.88