Finding the Third Proportional to 8,506.50 and 13,136.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,506.50 : 13,136.25 = 13,136.25 : x
2. Step 2: Convert to fraction form
   8,506.50/13,136.25 = 13,136.25/x
3. Step 3: Cross multiply
   8,506.50x = 13,136.25 × 13,136.25
4. Step 4: Simplify right side
   8,506.50x = 172,561,064.06
5. Step 5: Solve for x
   x = 172,561,064.06/8,506.50
6. Step 6: Final answer
   x = 20,285.79