Finding the Third Proportional to 11,557.69 and 21,201.75

Step by Step Solution

1. Step 1: Write the proportion equation
   11,557.69 : 21,201.75 = 21,201.75 : x
2. Step 2: Convert to fraction form
   11,557.69/21,201.75 = 21,201.75/x
3. Step 3: Cross multiply
   11,557.69x = 21,201.75 × 21,201.75
4. Step 4: Simplify right side
   11,557.69x = 449,514,203.06
5. Step 5: Solve for x
   x = 449,514,203.06/11,557.69
6. Step 6: Final answer
   x = 38,893.09