Finding the Third Proportional to 19,591.88 and 27,990.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,591.88 : 27,990.56 = 27,990.56 : x
2. Step 2: Convert to fraction form
   19,591.88/27,990.56 = 27,990.56/x
3. Step 3: Cross multiply
   19,591.88x = 27,990.56 × 27,990.56
4. Step 4: Simplify right side
   19,591.88x = 783,471,589.07
5. Step 5: Solve for x
   x = 783,471,589.07/19,591.88
6. Step 6: Final answer
   x = 39,989.62