Finding the Third Proportional to 622,914 and 978,641

Step by Step Solution

1. Step 1: Write the proportion equation
   622,914 : 978,641 = 978,641 : x
2. Step 2: Convert to fraction form
   622,914/978,641 = 978,641/x
3. Step 3: Cross multiply
   622,914x = 978,641 × 978,641
4. Step 4: Simplify right side
   622,914x = 957,738,206,881
5. Step 5: Solve for x
   x = 957,738,206,881/622,914
6. Step 6: Final answer
   x = 1,537,512.73