Finding the Third Proportional to 12,388 and 18,506

Step by Step Solution

1. Step 1: Write the proportion equation
   12,388 : 18,506 = 18,506 : x
2. Step 2: Convert to fraction form
   12,388/18,506 = 18,506/x
3. Step 3: Cross multiply
   12,388x = 18,506 × 18,506
4. Step 4: Simplify right side
   12,388x = 342,472,036
5. Step 5: Solve for x
   x = 342,472,036/12,388
6. Step 6: Final answer
   x = 27,645.47