Finding the Third Proportional to 7,539.38 and 12,321.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,539.38 : 12,321.56 = 12,321.56 : x
2. Step 2: Convert to fraction form
   7,539.38/12,321.56 = 12,321.56/x
3. Step 3: Cross multiply
   7,539.38x = 12,321.56 × 12,321.56
4. Step 4: Simplify right side
   7,539.38x = 151,820,902.44
5. Step 5: Solve for x
   x = 151,820,902.44/7,539.38
6. Step 6: Final answer
   x = 20,137.07