Finding the Third Proportional to 622,936 and 978,674

Step by Step Solution

1. Step 1: Write the proportion equation
   622,936 : 978,674 = 978,674 : x
2. Step 2: Convert to fraction form
   622,936/978,674 = 978,674/x
3. Step 3: Cross multiply
   622,936x = 978,674 × 978,674
4. Step 4: Simplify right side
   622,936x = 957,802,798,276
5. Step 5: Solve for x
   x = 957,802,798,276/622,936
6. Step 6: Final answer
   x = 1,537,562.12