Finding the Third Proportional to 21,476 and 28,864

Step by Step Solution

1. Step 1: Write the proportion equation
   21,476 : 28,864 = 28,864 : x
2. Step 2: Convert to fraction form
   21,476/28,864 = 28,864/x
3. Step 3: Cross multiply
   21,476x = 28,864 × 28,864
4. Step 4: Simplify right side
   21,476x = 833,130,496
5. Step 5: Solve for x
   x = 833,130,496/21,476
6. Step 6: Final answer
   x = 38,793.56