Finding the Third Proportional to 21,644 and 28,940

Step by Step Solution

1. Step 1: Write the proportion equation
   21,644 : 28,940 = 28,940 : x
2. Step 2: Convert to fraction form
   21,644/28,940 = 28,940/x
3. Step 3: Cross multiply
   21,644x = 28,940 × 28,940
4. Step 4: Simplify right side
   21,644x = 837,523,600
5. Step 5: Solve for x
   x = 837,523,600/21,644
6. Step 6: Final answer
   x = 38,695.42