Finding the Third Proportional to 20,308.50 and 31,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,308.50 : 31,384.50 = 31,384.50 : x
2. Step 2: Convert to fraction form
   20,308.50/31,384.50 = 31,384.50/x
3. Step 3: Cross multiply
   20,308.50x = 31,384.50 × 31,384.50
4. Step 4: Simplify right side
   20,308.50x = 984,986,840.25
5. Step 5: Solve for x
   x = 984,986,840.25/20,308.50
6. Step 6: Final answer
   x = 48,501.21