Finding the Third Proportional to 326,215.50 and 716,583

Step by Step Solution

1. Step 1: Write the proportion equation
   326,215.50 : 716,583 = 716,583 : x
2. Step 2: Convert to fraction form
   326,215.50/716,583 = 716,583/x
3. Step 3: Cross multiply
   326,215.50x = 716,583 × 716,583
4. Step 4: Simplify right side
   326,215.50x = 513,491,195,889
5. Step 5: Solve for x
   x = 513,491,195,889/326,215.50
6. Step 6: Final answer
   x = 1,574,085.83