Finding the Third Proportional to 11,365.31 and 18,242.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,365.31 : 18,242.72 = 18,242.72 : x
2. Step 2: Convert to fraction form
   11,365.31/18,242.72 = 18,242.72/x
3. Step 3: Cross multiply
   11,365.31x = 18,242.72 × 18,242.72
4. Step 4: Simplify right side
   11,365.31x = 332,796,787.39
5. Step 5: Solve for x
   x = 332,796,787.39/11,365.31
6. Step 6: Final answer
   x = 29,281.80