Finding the Third Proportional to 2,143,728 and 4,463,865

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143,728 : 4,463,865 = 4,463,865 : x
2. Step 2: Convert to fraction form
   2,143,728/4,463,865 = 4,463,865/x
3. Step 3: Cross multiply
   2,143,728x = 4,463,865 × 4,463,865
4. Step 4: Simplify right side
   2,143,728x = 19,926,090,738,225
5. Step 5: Solve for x
   x = 19,926,090,738,225/2,143,728
6. Step 6: Final answer
   x = 9,295,064.83