Finding the Third Proportional to 20,857.50 and 31,802.63

Step by Step Solution

1. Step 1: Write the proportion equation
   20,857.50 : 31,802.63 = 31,802.63 : x
2. Step 2: Convert to fraction form
   20,857.50/31,802.63 = 31,802.63/x
3. Step 3: Cross multiply
   20,857.50x = 31,802.63 × 31,802.63
4. Step 4: Simplify right side
   20,857.50x = 1,011,406,956.89
5. Step 5: Solve for x
   x = 1,011,406,956.89/20,857.50
6. Step 6: Final answer
   x = 48,491.28