Finding the Third Proportional to 450,648 and 978,326

Step by Step Solution

1. Step 1: Write the proportion equation
   450,648 : 978,326 = 978,326 : x
2. Step 2: Convert to fraction form
   450,648/978,326 = 978,326/x
3. Step 3: Cross multiply
   450,648x = 978,326 × 978,326
4. Step 4: Simplify right side
   450,648x = 957,121,762,276
5. Step 5: Solve for x
   x = 957,121,762,276/450,648
6. Step 6: Final answer
   x = 2,123,878.86