Finding the Third Proportional to 646,682 and 978,966

Step by Step Solution

1. Step 1: Write the proportion equation
   646,682 : 978,966 = 978,966 : x
2. Step 2: Convert to fraction form
   646,682/978,966 = 978,966/x
3. Step 3: Cross multiply
   646,682x = 978,966 × 978,966
4. Step 4: Simplify right side
   646,682x = 958,374,429,156
5. Step 5: Solve for x
   x = 958,374,429,156/646,682
6. Step 6: Final answer
   x = 1,481,987.17