Finding the Third Proportional to 20,551 and 42,073

Step by Step Solution

1. Step 1: Write the proportion equation
   20,551 : 42,073 = 42,073 : x
2. Step 2: Convert to fraction form
   20,551/42,073 = 42,073/x
3. Step 3: Cross multiply
   20,551x = 42,073 × 42,073
4. Step 4: Simplify right side
   20,551x = 1,770,137,329
5. Step 5: Solve for x
   x = 1,770,137,329/20,551
6. Step 6: Final answer
   x = 86,133.88