Finding the Third Proportional to 8,512.17 and 13,223.67

Step by Step Solution

1. Step 1: Write the proportion equation
   8,512.17 : 13,223.67 = 13,223.67 : x
2. Step 2: Convert to fraction form
   8,512.17/13,223.67 = 13,223.67/x
3. Step 3: Cross multiply
   8,512.17x = 13,223.67 × 13,223.67
4. Step 4: Simplify right side
   8,512.17x = 174,865,497.86
5. Step 5: Solve for x
   x = 174,865,497.86/8,512.17
6. Step 6: Final answer
   x = 20,542.99