Finding the Third Proportional to 622,944 and 978,686

Step by Step Solution

1. Step 1: Write the proportion equation
   622,944 : 978,686 = 978,686 : x
2. Step 2: Convert to fraction form
   622,944/978,686 = 978,686/x
3. Step 3: Cross multiply
   622,944x = 978,686 × 978,686
4. Step 4: Simplify right side
   622,944x = 957,826,286,596
5. Step 5: Solve for x
   x = 957,826,286,596/622,944
6. Step 6: Final answer
   x = 1,537,580.08