Finding the Third Proportional to 646,675 and 978,958.50

Step by Step Solution

1. Step 1: Write the proportion equation
   646,675 : 978,958.50 = 978,958.50 : x
2. Step 2: Convert to fraction form
   646,675/978,958.50 = 978,958.50/x
3. Step 3: Cross multiply
   646,675x = 978,958.50 × 978,958.50
4. Step 4: Simplify right side
   646,675x = 958,359,744,722.25
5. Step 5: Solve for x
   x = 958,359,744,722.25/646,675
6. Step 6: Final answer
   x = 1,481,980.51