Finding the Third Proportional to 21,340 and 30,039

Step by Step Solution

1. Step 1: Write the proportion equation
   21,340 : 30,039 = 30,039 : x
2. Step 2: Convert to fraction form
   21,340/30,039 = 30,039/x
3. Step 3: Cross multiply
   21,340x = 30,039 × 30,039
4. Step 4: Simplify right side
   21,340x = 902,341,521
5. Step 5: Solve for x
   x = 902,341,521/21,340
6. Step 6: Final answer
   x = 42,284.05