Finding the Third Proportional to 11,115 and 17,205

Step by Step Solution

1. Step 1: Write the proportion equation
   11,115 : 17,205 = 17,205 : x
2. Step 2: Convert to fraction form
   11,115/17,205 = 17,205/x
3. Step 3: Cross multiply
   11,115x = 17,205 × 17,205
4. Step 4: Simplify right side
   11,115x = 296,012,025
5. Step 5: Solve for x
   x = 296,012,025/11,115
6. Step 6: Final answer
   x = 26,631.76