Finding the Third Proportional to 5,136.75 and 7,936.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,136.75 : 7,936.31 = 7,936.31 : x
2. Step 2: Convert to fraction form
   5,136.75/7,936.31 = 7,936.31/x
3. Step 3: Cross multiply
   5,136.75x = 7,936.31 × 7,936.31
4. Step 4: Simplify right side
   5,136.75x = 62,985,056.10
5. Step 5: Solve for x
   x = 62,985,056.10/5,136.75
6. Step 6: Final answer
   x = 12,261.65