Finding the Third Proportional to 450,664 and 978,358

Step by Step Solution

1. Step 1: Write the proportion equation
   450,664 : 978,358 = 978,358 : x
2. Step 2: Convert to fraction form
   450,664/978,358 = 978,358/x
3. Step 3: Cross multiply
   450,664x = 978,358 × 978,358
4. Step 4: Simplify right side
   450,664x = 957,184,376,164
5. Step 5: Solve for x
   x = 957,184,376,164/450,664
6. Step 6: Final answer
   x = 2,123,942.40