Finding the Third Proportional to 19,240 and 39,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,240 : 39,436.50 = 39,436.50 : x
2. Step 2: Convert to fraction form
   19,240/39,436.50 = 39,436.50/x
3. Step 3: Cross multiply
   19,240x = 39,436.50 × 39,436.50
4. Step 4: Simplify right side
   19,240x = 1,555,237,532.25
5. Step 5: Solve for x
   x = 1,555,237,532.25/19,240
6. Step 6: Final answer
   x = 80,833.55