Finding the Third Proportional to 9,905 and 13,456

Step by Step Solution

1. Step 1: Write the proportion equation
   9,905 : 13,456 = 13,456 : x
2. Step 2: Convert to fraction form
   9,905/13,456 = 13,456/x
3. Step 3: Cross multiply
   9,905x = 13,456 × 13,456
4. Step 4: Simplify right side
   9,905x = 181,063,936
5. Step 5: Solve for x
   x = 181,063,936/9,905
6. Step 6: Final answer
   x = 18,280.05