Finding the Third Proportional to 13,216 and 19,386

Step by Step Solution

1. Step 1: Write the proportion equation
   13,216 : 19,386 = 19,386 : x
2. Step 2: Convert to fraction form
   13,216/19,386 = 19,386/x
3. Step 3: Cross multiply
   13,216x = 19,386 × 19,386
4. Step 4: Simplify right side
   13,216x = 375,816,996
5. Step 5: Solve for x
   x = 375,816,996/13,216
6. Step 6: Final answer
   x = 28,436.52