Finding the Third Proportional to 11,918 and 25,418

Step by Step Solution

1. Step 1: Write the proportion equation
   11,918 : 25,418 = 25,418 : x
2. Step 2: Convert to fraction form
   11,918/25,418 = 25,418/x
3. Step 3: Cross multiply
   11,918x = 25,418 × 25,418
4. Step 4: Simplify right side
   11,918x = 646,074,724
5. Step 5: Solve for x
   x = 646,074,724/11,918
6. Step 6: Final answer
   x = 54,210.00