Finding the Third Proportional to 646,674 and 978,956

Step by Step Solution

1. Step 1: Write the proportion equation
   646,674 : 978,956 = 978,956 : x
2. Step 2: Convert to fraction form
   646,674/978,956 = 978,956/x
3. Step 3: Cross multiply
   646,674x = 978,956 × 978,956
4. Step 4: Simplify right side
   646,674x = 958,354,849,936
5. Step 5: Solve for x
   x = 958,354,849,936/646,674
6. Step 6: Final answer
   x = 1,481,975.23