Finding the Third Proportional to 13,480 and 20,116

Step by Step Solution

1. Step 1: Write the proportion equation
   13,480 : 20,116 = 20,116 : x
2. Step 2: Convert to fraction form
   13,480/20,116 = 20,116/x
3. Step 3: Cross multiply
   13,480x = 20,116 × 20,116
4. Step 4: Simplify right side
   13,480x = 404,653,456
5. Step 5: Solve for x
   x = 404,653,456/13,480
6. Step 6: Final answer
   x = 30,018.80