Finding the Third Proportional to 20,718 and 31,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,718 : 31,099.50 = 31,099.50 : x
2. Step 2: Convert to fraction form
   20,718/31,099.50 = 31,099.50/x
3. Step 3: Cross multiply
   20,718x = 31,099.50 × 31,099.50
4. Step 4: Simplify right side
   20,718x = 967,178,900.25
5. Step 5: Solve for x
   x = 967,178,900.25/20,718
6. Step 6: Final answer
   x = 46,683.02