Finding the Third Proportional to 622,929 and 978,663

Step by Step Solution

1. Step 1: Write the proportion equation
   622,929 : 978,663 = 978,663 : x
2. Step 2: Convert to fraction form
   622,929/978,663 = 978,663/x
3. Step 3: Cross multiply
   622,929x = 978,663 × 978,663
4. Step 4: Simplify right side
   622,929x = 957,781,267,569
5. Step 5: Solve for x
   x = 957,781,267,569/622,929
6. Step 6: Final answer
   x = 1,537,544.84