Finding the Third Proportional to 11,290 and 17,407

Step by Step Solution

1. Step 1: Write the proportion equation
   11,290 : 17,407 = 17,407 : x
2. Step 2: Convert to fraction form
   11,290/17,407 = 17,407/x
3. Step 3: Cross multiply
   11,290x = 17,407 × 17,407
4. Step 4: Simplify right side
   11,290x = 303,003,649
5. Step 5: Solve for x
   x = 303,003,649/11,290
6. Step 6: Final answer
   x = 26,838.23