Finding the Third Proportional to 9,018 and 13,428

Step by Step Solution

1. Step 1: Write the proportion equation
   9,018 : 13,428 = 13,428 : x
2. Step 2: Convert to fraction form
   9,018/13,428 = 13,428/x
3. Step 3: Cross multiply
   9,018x = 13,428 × 13,428
4. Step 4: Simplify right side
   9,018x = 180,311,184
5. Step 5: Solve for x
   x = 180,311,184/9,018
6. Step 6: Final answer
   x = 19,994.59