Finding the Third Proportional to 21,956 and 42,805

Step by Step Solution

1. Step 1: Write the proportion equation
   21,956 : 42,805 = 42,805 : x
2. Step 2: Convert to fraction form
   21,956/42,805 = 42,805/x
3. Step 3: Cross multiply
   21,956x = 42,805 × 42,805
4. Step 4: Simplify right side
   21,956x = 1,832,268,025
5. Step 5: Solve for x
   x = 1,832,268,025/21,956
6. Step 6: Final answer
   x = 83,451.81