Finding the Third Proportional to 11,709.56 and 18,895.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,709.56 : 18,895.78 = 18,895.78 : x
2. Step 2: Convert to fraction form
   11,709.56/18,895.78 = 18,895.78/x
3. Step 3: Cross multiply
   11,709.56x = 18,895.78 × 18,895.78
4. Step 4: Simplify right side
   11,709.56x = 357,050,549.05
5. Step 5: Solve for x
   x = 357,050,549.05/11,709.56
6. Step 6: Final answer
   x = 30,492.22