Finding the Third Proportional to 11,889 and 18,410

Step by Step Solution

1. Step 1: Write the proportion equation
   11,889 : 18,410 = 18,410 : x
2. Step 2: Convert to fraction form
   11,889/18,410 = 18,410/x
3. Step 3: Cross multiply
   11,889x = 18,410 × 18,410
4. Step 4: Simplify right side
   11,889x = 338,928,100
5. Step 5: Solve for x
   x = 338,928,100/11,889
6. Step 6: Final answer
   x = 28,507.70