Finding the Third Proportional to 21,447 and 30,940

Step by Step Solution

1. Step 1: Write the proportion equation
   21,447 : 30,940 = 30,940 : x
2. Step 2: Convert to fraction form
   21,447/30,940 = 30,940/x
3. Step 3: Cross multiply
   21,447x = 30,940 × 30,940
4. Step 4: Simplify right side
   21,447x = 957,283,600
5. Step 5: Solve for x
   x = 957,283,600/21,447
6. Step 6: Final answer
   x = 44,634.85