Finding the Third Proportional to 13,122 and 20,869.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,122 : 20,869.31 = 20,869.31 : x
2. Step 2: Convert to fraction form
   13,122/20,869.31 = 20,869.31/x
3. Step 3: Cross multiply
   13,122x = 20,869.31 × 20,869.31
4. Step 4: Simplify right side
   13,122x = 435,528,204.22
5. Step 5: Solve for x
   x = 435,528,204.22/13,122
6. Step 6: Final answer
   x = 33,190.69