Finding the Third Proportional to 18,145.75 and 27,758.88

Step by Step Solution

1. Step 1: Write the proportion equation
   18,145.75 : 27,758.88 = 27,758.88 : x
2. Step 2: Convert to fraction form
   18,145.75/27,758.88 = 27,758.88/x
3. Step 3: Cross multiply
   18,145.75x = 27,758.88 × 27,758.88
4. Step 4: Simplify right side
   18,145.75x = 770,555,141.27
5. Step 5: Solve for x
   x = 770,555,141.27/18,145.75
6. Step 6: Final answer
   x = 42,464.77