Finding the Third Proportional to 12,312 and 17,988

Step by Step Solution

1. Step 1: Write the proportion equation
   12,312 : 17,988 = 17,988 : x
2. Step 2: Convert to fraction form
   12,312/17,988 = 17,988/x
3. Step 3: Cross multiply
   12,312x = 17,988 × 17,988
4. Step 4: Simplify right side
   12,312x = 323,568,144
5. Step 5: Solve for x
   x = 323,568,144/12,312
6. Step 6: Final answer
   x = 26,280.71