Finding the Third Proportional to 10,860 and 17,490

Step by Step Solution

1. Step 1: Write the proportion equation
   10,860 : 17,490 = 17,490 : x
2. Step 2: Convert to fraction form
   10,860/17,490 = 17,490/x
3. Step 3: Cross multiply
   10,860x = 17,490 × 17,490
4. Step 4: Simplify right side
   10,860x = 305,900,100
5. Step 5: Solve for x
   x = 305,900,100/10,860
6. Step 6: Final answer
   x = 28,167.60