Finding the Third Proportional to 326,491.50 and 682,503

Step by Step Solution

1. Step 1: Write the proportion equation
   326,491.50 : 682,503 = 682,503 : x
2. Step 2: Convert to fraction form
   326,491.50/682,503 = 682,503/x
3. Step 3: Cross multiply
   326,491.50x = 682,503 × 682,503
4. Step 4: Simplify right side
   326,491.50x = 465,810,345,009
5. Step 5: Solve for x
   x = 465,810,345,009/326,491.50
6. Step 6: Final answer
   x = 1,426,715.08