Finding the Third Proportional to 12,629 and 21,167

Step by Step Solution

1. Step 1: Write the proportion equation
   12,629 : 21,167 = 21,167 : x
2. Step 2: Convert to fraction form
   12,629/21,167 = 21,167/x
3. Step 3: Cross multiply
   12,629x = 21,167 × 21,167
4. Step 4: Simplify right side
   12,629x = 448,041,889
5. Step 5: Solve for x
   x = 448,041,889/12,629
6. Step 6: Final answer
   x = 35,477.23