Finding the Third Proportional to 20,871 and 31,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,871 : 31,300.50 = 31,300.50 : x
2. Step 2: Convert to fraction form
   20,871/31,300.50 = 31,300.50/x
3. Step 3: Cross multiply
   20,871x = 31,300.50 × 31,300.50
4. Step 4: Simplify right side
   20,871x = 979,721,300.25
5. Step 5: Solve for x
   x = 979,721,300.25/20,871
6. Step 6: Final answer
   x = 46,941.75