Finding the Third Proportional to 450,658 and 978,346

Step by Step Solution

1. Step 1: Write the proportion equation
   450,658 : 978,346 = 978,346 : x
2. Step 2: Convert to fraction form
   450,658/978,346 = 978,346/x
3. Step 3: Cross multiply
   450,658x = 978,346 × 978,346
4. Step 4: Simplify right side
   450,658x = 957,160,895,716
5. Step 5: Solve for x
   x = 957,160,895,716/450,658
6. Step 6: Final answer
   x = 2,123,918.57