Finding the Third Proportional to 11,136.38 and 15,678.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,136.38 : 15,678.56 = 15,678.56 : x
2. Step 2: Convert to fraction form
   11,136.38/15,678.56 = 15,678.56/x
3. Step 3: Cross multiply
   11,136.38x = 15,678.56 × 15,678.56
4. Step 4: Simplify right side
   11,136.38x = 245,817,322.07
5. Step 5: Solve for x
   x = 245,817,322.07/11,136.38
6. Step 6: Final answer
   x = 22,073.37