Finding the Third Proportional to 10,056 and 20,781

Step by Step Solution

1. Step 1: Write the proportion equation
   10,056 : 20,781 = 20,781 : x
2. Step 2: Convert to fraction form
   10,056/20,781 = 20,781/x
3. Step 3: Cross multiply
   10,056x = 20,781 × 20,781
4. Step 4: Simplify right side
   10,056x = 431,849,961
5. Step 5: Solve for x
   x = 431,849,961/10,056
6. Step 6: Final answer
   x = 42,944.51