Finding the Third Proportional to 13,455 and 18,470

Step by Step Solution

1. Step 1: Write the proportion equation
   13,455 : 18,470 = 18,470 : x
2. Step 2: Convert to fraction form
   13,455/18,470 = 18,470/x
3. Step 3: Cross multiply
   13,455x = 18,470 × 18,470
4. Step 4: Simplify right side
   13,455x = 341,140,900
5. Step 5: Solve for x
   x = 341,140,900/13,455
6. Step 6: Final answer
   x = 25,354.21