Finding the Third Proportional to 622,942 and 978,683

Step by Step Solution

1. Step 1: Write the proportion equation
   622,942 : 978,683 = 978,683 : x
2. Step 2: Convert to fraction form
   622,942/978,683 = 978,683/x
3. Step 3: Cross multiply
   622,942x = 978,683 × 978,683
4. Step 4: Simplify right side
   622,942x = 957,820,414,489
5. Step 5: Solve for x
   x = 957,820,414,489/622,942
6. Step 6: Final answer
   x = 1,537,575.59