Finding the Third Proportional to 21,780 and 32,916

Step by Step Solution

1. Step 1: Write the proportion equation
   21,780 : 32,916 = 32,916 : x
2. Step 2: Convert to fraction form
   21,780/32,916 = 32,916/x
3. Step 3: Cross multiply
   21,780x = 32,916 × 32,916
4. Step 4: Simplify right side
   21,780x = 1,083,463,056
5. Step 5: Solve for x
   x = 1,083,463,056/21,780
6. Step 6: Final answer
   x = 49,745.78