Finding the Third Proportional to 622,924 and 978,656

Step by Step Solution

1. Step 1: Write the proportion equation
   622,924 : 978,656 = 978,656 : x
2. Step 2: Convert to fraction form
   622,924/978,656 = 978,656/x
3. Step 3: Cross multiply
   622,924x = 978,656 × 978,656
4. Step 4: Simplify right side
   622,924x = 957,767,566,336
5. Step 5: Solve for x
   x = 957,767,566,336/622,924
6. Step 6: Final answer
   x = 1,537,535.18