Finding the Third Proportional to 3,968,772 and 8,414,432

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968,772 : 8,414,432 = 8,414,432 : x
2. Step 2: Convert to fraction form
   3,968,772/8,414,432 = 8,414,432/x
3. Step 3: Cross multiply
   3,968,772x = 8,414,432 × 8,414,432
4. Step 4: Simplify right side
   3,968,772x = 70,802,665,882,624
5. Step 5: Solve for x
   x = 70,802,665,882,624/3,968,772
6. Step 6: Final answer
   x = 17,839,942.90