Finding the Third Proportional to 449,853 and 978,438

Step by Step Solution

1. Step 1: Write the proportion equation
   449,853 : 978,438 = 978,438 : x
2. Step 2: Convert to fraction form
   449,853/978,438 = 978,438/x
3. Step 3: Cross multiply
   449,853x = 978,438 × 978,438
4. Step 4: Simplify right side
   449,853x = 957,340,919,844
5. Step 5: Solve for x
   x = 957,340,919,844/449,853
6. Step 6: Final answer
   x = 2,128,119.45