Finding the Third Proportional to 19,855.13 and 27,828.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,855.13 : 27,828.56 = 27,828.56 : x
2. Step 2: Convert to fraction form
   19,855.13/27,828.56 = 27,828.56/x
3. Step 3: Cross multiply
   19,855.13x = 27,828.56 × 27,828.56
4. Step 4: Simplify right side
   19,855.13x = 774,428,890.82
5. Step 5: Solve for x
   x = 774,428,890.82/19,855.13
6. Step 6: Final answer
   x = 39,003.98