Finding the Third Proportional to 443,911 and 978,310

Step by Step Solution

1. Step 1: Write the proportion equation
   443,911 : 978,310 = 978,310 : x
2. Step 2: Convert to fraction form
   443,911/978,310 = 978,310/x
3. Step 3: Cross multiply
   443,911x = 978,310 × 978,310
4. Step 4: Simplify right side
   443,911x = 957,090,456,100
5. Step 5: Solve for x
   x = 957,090,456,100/443,911
6. Step 6: Final answer
   x = 2,156,041.31