Finding the Third Proportional to 326,016 and 691,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   326,016 : 691,276.50 = 691,276.50 : x
2. Step 2: Convert to fraction form
   326,016/691,276.50 = 691,276.50/x
3. Step 3: Cross multiply
   326,016x = 691,276.50 × 691,276.50
4. Step 4: Simplify right side
   326,016x = 477,863,199,452.25
5. Step 5: Solve for x
   x = 477,863,199,452.25/326,016
6. Step 6: Final answer
   x = 1,465,766.10