Finding the Third Proportional to 443,901 and 978,289

Step by Step Solution

1. Step 1: Write the proportion equation
   443,901 : 978,289 = 978,289 : x
2. Step 2: Convert to fraction form
   443,901/978,289 = 978,289/x
3. Step 3: Cross multiply
   443,901x = 978,289 × 978,289
4. Step 4: Simplify right side
   443,901x = 957,049,367,521
5. Step 5: Solve for x
   x = 957,049,367,521/443,901
6. Step 6: Final answer
   x = 2,155,997.32