Finding the Third Proportional to 12,136.50 and 13,351.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,136.50 : 13,351.50 = 13,351.50 : x
2. Step 2: Convert to fraction form
   12,136.50/13,351.50 = 13,351.50/x
3. Step 3: Cross multiply
   12,136.50x = 13,351.50 × 13,351.50
4. Step 4: Simplify right side
   12,136.50x = 178,262,552.25
5. Step 5: Solve for x
   x = 178,262,552.25/12,136.50
6. Step 6: Final answer
   x = 14,688.14