Finding the Third Proportional to 19,136.25 and 39,912.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,136.25 : 39,912.75 = 39,912.75 : x
2. Step 2: Convert to fraction form
   19,136.25/39,912.75 = 39,912.75/x
3. Step 3: Cross multiply
   19,136.25x = 39,912.75 × 39,912.75
4. Step 4: Simplify right side
   19,136.25x = 1,593,027,612.56
5. Step 5: Solve for x
   x = 1,593,027,612.56/19,136.25
6. Step 6: Final answer
   x = 83,246.59