Finding the Third Proportional to 21,680 and 29,060

Step by Step Solution

1. Step 1: Write the proportion equation
   21,680 : 29,060 = 29,060 : x
2. Step 2: Convert to fraction form
   21,680/29,060 = 29,060/x
3. Step 3: Cross multiply
   21,680x = 29,060 × 29,060
4. Step 4: Simplify right side
   21,680x = 844,483,600
5. Step 5: Solve for x
   x = 844,483,600/21,680
6. Step 6: Final answer
   x = 38,952.20