Finding the Third Proportional to 1,055,145 and 2,147,578

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055,145 : 2,147,578 = 2,147,578 : x
2. Step 2: Convert to fraction form
   1,055,145/2,147,578 = 2,147,578/x
3. Step 3: Cross multiply
   1,055,145x = 2,147,578 × 2,147,578
4. Step 4: Simplify right side
   1,055,145x = 4,612,091,266,084
5. Step 5: Solve for x
   x = 4,612,091,266,084/1,055,145
6. Step 6: Final answer
   x = 4,371,049.73