Finding the Third Proportional to 13,388 and 17,878

Step by Step Solution

1. Step 1: Write the proportion equation
   13,388 : 17,878 = 17,878 : x
2. Step 2: Convert to fraction form
   13,388/17,878 = 17,878/x
3. Step 3: Cross multiply
   13,388x = 17,878 × 17,878
4. Step 4: Simplify right side
   13,388x = 319,622,884
5. Step 5: Solve for x
   x = 319,622,884/13,388
6. Step 6: Final answer
   x = 23,873.83