Finding the Third Proportional to 2,158.31 and 4,923.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.31 : 4,923.56 = 4,923.56 : x
2. Step 2: Convert to fraction form
   2,158.31/4,923.56 = 4,923.56/x
3. Step 3: Cross multiply
   2,158.31x = 4,923.56 × 4,923.56
4. Step 4: Simplify right side
   2,158.31x = 24,241,467.69
5. Step 5: Solve for x
   x = 24,241,467.69/2,158.31
6. Step 6: Final answer
   x = 11,231.68