Finding the Third Proportional to 8,133 and 12,880.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,133 : 12,880.50 = 12,880.50 : x
2. Step 2: Convert to fraction form
   8,133/12,880.50 = 12,880.50/x
3. Step 3: Cross multiply
   8,133x = 12,880.50 × 12,880.50
4. Step 4: Simplify right side
   8,133x = 165,907,280.25
5. Step 5: Solve for x
   x = 165,907,280.25/8,133
6. Step 6: Final answer
   x = 20,399.27