Finding the Third Proportional to 3,931.50 and 8,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.50 : 8,269.50 = 8,269.50 : x
2. Step 2: Convert to fraction form
   3,931.50/8,269.50 = 8,269.50/x
3. Step 3: Cross multiply
   3,931.50x = 8,269.50 × 8,269.50
4. Step 4: Simplify right side
   3,931.50x = 68,384,630.25
5. Step 5: Solve for x
   x = 68,384,630.25/3,931.50
6. Step 6: Final answer
   x = 17,394.03