Finding the Third Proportional to 8,080 and 12,480.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,080 : 12,480.50 = 12,480.50 : x
2. Step 2: Convert to fraction form
   8,080/12,480.50 = 12,480.50/x
3. Step 3: Cross multiply
   8,080x = 12,480.50 × 12,480.50
4. Step 4: Simplify right side
   8,080x = 155,762,880.25
5. Step 5: Solve for x
   x = 155,762,880.25/8,080
6. Step 6: Final answer
   x = 19,277.58