Finding the Third Proportional to 19,478.81 and 27,855.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,478.81 : 27,855.56 = 27,855.56 : x
2. Step 2: Convert to fraction form
   19,478.81/27,855.56 = 27,855.56/x
3. Step 3: Cross multiply
   19,478.81x = 27,855.56 × 27,855.56
4. Step 4: Simplify right side
   19,478.81x = 775,932,362.19
5. Step 5: Solve for x
   x = 775,932,362.19/19,478.81
6. Step 6: Final answer
   x = 39,834.69