Finding the Third Proportional to 13,316 and 20,217.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,316 : 20,217.50 = 20,217.50 : x
2. Step 2: Convert to fraction form
   13,316/20,217.50 = 20,217.50/x
3. Step 3: Cross multiply
   13,316x = 20,217.50 × 20,217.50
4. Step 4: Simplify right side
   13,316x = 408,747,306.25
5. Step 5: Solve for x
   x = 408,747,306.25/13,316
6. Step 6: Final answer
   x = 30,695.95