Finding the Third Proportional to 20,686 and 30,877

Step by Step Solution

1. Step 1: Write the proportion equation
   20,686 : 30,877 = 30,877 : x
2. Step 2: Convert to fraction form
   20,686/30,877 = 30,877/x
3. Step 3: Cross multiply
   20,686x = 30,877 × 30,877
4. Step 4: Simplify right side
   20,686x = 953,389,129
5. Step 5: Solve for x
   x = 953,389,129/20,686
6. Step 6: Final answer
   x = 46,088.62