Finding the Third Proportional to 3,736,880 and 8,171,728

Step by Step Solution

1. Step 1: Write the proportion equation
   3,736,880 : 8,171,728 = 8,171,728 : x
2. Step 2: Convert to fraction form
   3,736,880/8,171,728 = 8,171,728/x
3. Step 3: Cross multiply
   3,736,880x = 8,171,728 × 8,171,728
4. Step 4: Simplify right side
   3,736,880x = 66,777,138,505,984
5. Step 5: Solve for x
   x = 66,777,138,505,984/3,736,880
6. Step 6: Final answer
   x = 17,869,757.26