Finding the Third Proportional to 21,646 and 28,945

Step by Step Solution

1. Step 1: Write the proportion equation
   21,646 : 28,945 = 28,945 : x
2. Step 2: Convert to fraction form
   21,646/28,945 = 28,945/x
3. Step 3: Cross multiply
   21,646x = 28,945 × 28,945
4. Step 4: Simplify right side
   21,646x = 837,813,025
5. Step 5: Solve for x
   x = 837,813,025/21,646
6. Step 6: Final answer
   x = 38,705.21