Finding the Third Proportional to 18,756.56 and 40,287.38

Step by Step Solution

1. Step 1: Write the proportion equation
   18,756.56 : 40,287.38 = 40,287.38 : x
2. Step 2: Convert to fraction form
   18,756.56/40,287.38 = 40,287.38/x
3. Step 3: Cross multiply
   18,756.56x = 40,287.38 × 40,287.38
4. Step 4: Simplify right side
   18,756.56x = 1,623,072,584.39
5. Step 5: Solve for x
   x = 1,623,072,584.39/18,756.56
6. Step 6: Final answer
   x = 86,533.58