Finding the Third Proportional to 646,672 and 978,951

Step by Step Solution

1. Step 1: Write the proportion equation
   646,672 : 978,951 = 978,951 : x
2. Step 2: Convert to fraction form
   646,672/978,951 = 978,951/x
3. Step 3: Cross multiply
   646,672x = 978,951 × 978,951
4. Step 4: Simplify right side
   646,672x = 958,345,060,401
5. Step 5: Solve for x
   x = 958,345,060,401/646,672
6. Step 6: Final answer
   x = 1,481,964.68