Finding the Third Proportional to 447,503 and 978,294

Step by Step Solution

1. Step 1: Write the proportion equation
   447,503 : 978,294 = 978,294 : x
2. Step 2: Convert to fraction form
   447,503/978,294 = 978,294/x
3. Step 3: Cross multiply
   447,503x = 978,294 × 978,294
4. Step 4: Simplify right side
   447,503x = 957,059,150,436
5. Step 5: Solve for x
   x = 957,059,150,436/447,503
6. Step 6: Final answer
   x = 2,138,665.33