Finding the Third Proportional to 4,256.72 and 9,252.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,256.72 : 9,252.56 = 9,252.56 : x
2. Step 2: Convert to fraction form
   4,256.72/9,252.56 = 9,252.56/x
3. Step 3: Cross multiply
   4,256.72x = 9,252.56 × 9,252.56
4. Step 4: Simplify right side
   4,256.72x = 85,609,912.82
5. Step 5: Solve for x
   x = 85,609,912.82/4,256.72
6. Step 6: Final answer
   x = 20,111.71