Finding the Third Proportional to 15,958 and 21,667

Step by Step Solution

1. Step 1: Write the proportion equation
   15,958 : 21,667 = 21,667 : x
2. Step 2: Convert to fraction form
   15,958/21,667 = 21,667/x
3. Step 3: Cross multiply
   15,958x = 21,667 × 21,667
4. Step 4: Simplify right side
   15,958x = 469,458,889
5. Step 5: Solve for x
   x = 469,458,889/15,958
6. Step 6: Final answer
   x = 29,418.40