Finding the Third Proportional to 9,918 and 13,230

Step by Step Solution

1. Step 1: Write the proportion equation
   9,918 : 13,230 = 13,230 : x
2. Step 2: Convert to fraction form
   9,918/13,230 = 13,230/x
3. Step 3: Cross multiply
   9,918x = 13,230 × 13,230
4. Step 4: Simplify right side
   9,918x = 175,032,900
5. Step 5: Solve for x
   x = 175,032,900/9,918
6. Step 6: Final answer
   x = 17,648.00