Finding the Third Proportional to 19,806.75 and 39,937.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,806.75 : 39,937.50 = 39,937.50 : x
2. Step 2: Convert to fraction form
   19,806.75/39,937.50 = 39,937.50/x
3. Step 3: Cross multiply
   19,806.75x = 39,937.50 × 39,937.50
4. Step 4: Simplify right side
   19,806.75x = 1,595,003,906.25
5. Step 5: Solve for x
   x = 1,595,003,906.25/19,806.75
6. Step 6: Final answer
   x = 80,528.30