Finding the Third Proportional to 91,871 and 137,805

Step by Step Solution

1. Step 1: Write the proportion equation
   91,871 : 137,805 = 137,805 : x
2. Step 2: Convert to fraction form
   91,871/137,805 = 137,805/x
3. Step 3: Cross multiply
   91,871x = 137,805 × 137,805
4. Step 4: Simplify right side
   91,871x = 18,990,218,025
5. Step 5: Solve for x
   x = 18,990,218,025/91,871
6. Step 6: Final answer
   x = 206,705.25