Finding the Third Proportional to 20,857.50 and 31,549.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,857.50 : 31,549.50 = 31,549.50 : x
2. Step 2: Convert to fraction form
   20,857.50/31,549.50 = 31,549.50/x
3. Step 3: Cross multiply
   20,857.50x = 31,549.50 × 31,549.50
4. Step 4: Simplify right side
   20,857.50x = 995,370,950.25
5. Step 5: Solve for x
   x = 995,370,950.25/20,857.50
6. Step 6: Final answer
   x = 47,722.45