Finding the Third Proportional to 18,776 and 28,105

Step by Step Solution

1. Step 1: Write the proportion equation
   18,776 : 28,105 = 28,105 : x
2. Step 2: Convert to fraction form
   18,776/28,105 = 28,105/x
3. Step 3: Cross multiply
   18,776x = 28,105 × 28,105
4. Step 4: Simplify right side
   18,776x = 789,891,025
5. Step 5: Solve for x
   x = 789,891,025/18,776
6. Step 6: Final answer
   x = 42,069.19