Finding the Third Proportional to 19,729.50 and 31,371

Step by Step Solution

1. Step 1: Write the proportion equation
   19,729.50 : 31,371 = 31,371 : x
2. Step 2: Convert to fraction form
   19,729.50/31,371 = 31,371/x
3. Step 3: Cross multiply
   19,729.50x = 31,371 × 31,371
4. Step 4: Simplify right side
   19,729.50x = 984,139,641
5. Step 5: Solve for x
   x = 984,139,641/19,729.50
6. Step 6: Final answer
   x = 49,881.63