Finding the Third Proportional to 8,520 and 13,484

Step by Step Solution

1. Step 1: Write the proportion equation
   8,520 : 13,484 = 13,484 : x
2. Step 2: Convert to fraction form
   8,520/13,484 = 13,484/x
3. Step 3: Cross multiply
   8,520x = 13,484 × 13,484
4. Step 4: Simplify right side
   8,520x = 181,818,256
5. Step 5: Solve for x
   x = 181,818,256/8,520
6. Step 6: Final answer
   x = 21,340.17