Finding the Third Proportional to 443,912 and 978,307

Step by Step Solution

1. Step 1: Write the proportion equation
   443,912 : 978,307 = 978,307 : x
2. Step 2: Convert to fraction form
   443,912/978,307 = 978,307/x
3. Step 3: Cross multiply
   443,912x = 978,307 × 978,307
4. Step 4: Simplify right side
   443,912x = 957,084,586,249
5. Step 5: Solve for x
   x = 957,084,586,249/443,912
6. Step 6: Final answer
   x = 2,156,023.23