Finding the Third Proportional to 11,185.31 and 15,136.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,185.31 : 15,136.59 = 15,136.59 : x
2. Step 2: Convert to fraction form
   11,185.31/15,136.59 = 15,136.59/x
3. Step 3: Cross multiply
   11,185.31x = 15,136.59 × 15,136.59
4. Step 4: Simplify right side
   11,185.31x = 229,116,470.35
5. Step 5: Solve for x
   x = 229,116,470.35/11,185.31
6. Step 6: Final answer
   x = 20,483.69