Finding the Third Proportional to 13,911 and 21,568.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,911 : 21,568.50 = 21,568.50 : x
2. Step 2: Convert to fraction form
   13,911/21,568.50 = 21,568.50/x
3. Step 3: Cross multiply
   13,911x = 21,568.50 × 21,568.50
4. Step 4: Simplify right side
   13,911x = 465,200,192.25
5. Step 5: Solve for x
   x = 465,200,192.25/13,911
6. Step 6: Final answer
   x = 33,441.18