Finding the Third Proportional to 19,931.50 and 31,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,931.50 : 31,269.50 = 31,269.50 : x
2. Step 2: Convert to fraction form
   19,931.50/31,269.50 = 31,269.50/x
3. Step 3: Cross multiply
   19,931.50x = 31,269.50 × 31,269.50
4. Step 4: Simplify right side
   19,931.50x = 977,781,630.25
5. Step 5: Solve for x
   x = 977,781,630.25/19,931.50
6. Step 6: Final answer
   x = 49,057.10