Finding the Third Proportional to 21,068 and 28,272

Step by Step Solution

1. Step 1: Write the proportion equation
   21,068 : 28,272 = 28,272 : x
2. Step 2: Convert to fraction form
   21,068/28,272 = 28,272/x
3. Step 3: Cross multiply
   21,068x = 28,272 × 28,272
4. Step 4: Simplify right side
   21,068x = 799,305,984
5. Step 5: Solve for x
   x = 799,305,984/21,068
6. Step 6: Final answer
   x = 37,939.34