Finding the Third Proportional to 8,940.30 and 13,136.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,940.30 : 13,136.77 = 13,136.77 : x
2. Step 2: Convert to fraction form
   8,940.30/13,136.77 = 13,136.77/x
3. Step 3: Cross multiply
   8,940.30x = 13,136.77 × 13,136.77
4. Step 4: Simplify right side
   8,940.30x = 172,574,611.09
5. Step 5: Solve for x
   x = 172,574,611.09/8,940.30
6. Step 6: Final answer
   x = 19,302.99