Finding the Third Proportional to 1,787,616 and 3,889,728

Step by Step Solution

1. Step 1: Write the proportion equation
   1,787,616 : 3,889,728 = 3,889,728 : x
2. Step 2: Convert to fraction form
   1,787,616/3,889,728 = 3,889,728/x
3. Step 3: Cross multiply
   1,787,616x = 3,889,728 × 3,889,728
4. Step 4: Simplify right side
   1,787,616x = 15,129,983,913,984
5. Step 5: Solve for x
   x = 15,129,983,913,984/1,787,616
6. Step 6: Final answer
   x = 8,463,777.41