Finding the Third Proportional to 450,672 and 978,374

Step by Step Solution

1. Step 1: Write the proportion equation
   450,672 : 978,374 = 978,374 : x
2. Step 2: Convert to fraction form
   450,672/978,374 = 978,374/x
3. Step 3: Cross multiply
   450,672x = 978,374 × 978,374
4. Step 4: Simplify right side
   450,672x = 957,215,683,876
5. Step 5: Solve for x
   x = 957,215,683,876/450,672
6. Step 6: Final answer
   x = 2,123,974.16