Finding the Third Proportional to 9,912 and 13,353

Step by Step Solution

1. Step 1: Write the proportion equation
   9,912 : 13,353 = 13,353 : x
2. Step 2: Convert to fraction form
   9,912/13,353 = 13,353/x
3. Step 3: Cross multiply
   9,912x = 13,353 × 13,353
4. Step 4: Simplify right side
   9,912x = 178,302,609
5. Step 5: Solve for x
   x = 178,302,609/9,912
6. Step 6: Final answer
   x = 17,988.56