Finding the Third Proportional to 21,579.54 and 27,756.11

Step by Step Solution

1. Step 1: Write the proportion equation
   21,579.54 : 27,756.11 = 27,756.11 : x
2. Step 2: Convert to fraction form
   21,579.54/27,756.11 = 27,756.11/x
3. Step 3: Cross multiply
   21,579.54x = 27,756.11 × 27,756.11
4. Step 4: Simplify right side
   21,579.54x = 770,401,390.79
5. Step 5: Solve for x
   x = 770,401,390.79/21,579.54
6. Step 6: Final answer
   x = 35,700.55