Finding the Third Proportional to 622,928 and 978,662

Step by Step Solution

1. Step 1: Write the proportion equation
   622,928 : 978,662 = 978,662 : x
2. Step 2: Convert to fraction form
   622,928/978,662 = 978,662/x
3. Step 3: Cross multiply
   622,928x = 978,662 × 978,662
4. Step 4: Simplify right side
   622,928x = 957,779,310,244
5. Step 5: Solve for x
   x = 957,779,310,244/622,928
6. Step 6: Final answer
   x = 1,537,544.16