Finding the Third Proportional to 19,292.25 and 39,120.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,292.25 : 39,120.75 = 39,120.75 : x
2. Step 2: Convert to fraction form
   19,292.25/39,120.75 = 39,120.75/x
3. Step 3: Cross multiply
   19,292.25x = 39,120.75 × 39,120.75
4. Step 4: Simplify right side
   19,292.25x = 1,530,433,080.56
5. Step 5: Solve for x
   x = 1,530,433,080.56/19,292.25
6. Step 6: Final answer
   x = 79,328.91