Finding the Third Proportional to 4,222.13 and 5,715.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,222.13 : 5,715.56 = 5,715.56 : x
2. Step 2: Convert to fraction form
   4,222.13/5,715.56 = 5,715.56/x
3. Step 3: Cross multiply
   4,222.13x = 5,715.56 × 5,715.56
4. Step 4: Simplify right side
   4,222.13x = 32,667,654.69
5. Step 5: Solve for x
   x = 32,667,654.69/4,222.13
6. Step 6: Final answer
   x = 7,737.25