Finding the Third Proportional to 21,180 and 30,258

Step by Step Solution

1. Step 1: Write the proportion equation
   21,180 : 30,258 = 30,258 : x
2. Step 2: Convert to fraction form
   21,180/30,258 = 30,258/x
3. Step 3: Cross multiply
   21,180x = 30,258 × 30,258
4. Step 4: Simplify right side
   21,180x = 915,546,564
5. Step 5: Solve for x
   x = 915,546,564/21,180
6. Step 6: Final answer
   x = 43,226.94