Finding the Third Proportional to 18,171 and 39,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,171 : 39,136.50 = 39,136.50 : x
2. Step 2: Convert to fraction form
   18,171/39,136.50 = 39,136.50/x
3. Step 3: Cross multiply
   18,171x = 39,136.50 × 39,136.50
4. Step 4: Simplify right side
   18,171x = 1,531,665,632.25
5. Step 5: Solve for x
   x = 1,531,665,632.25/18,171
6. Step 6: Final answer
   x = 84,291.76