Finding the Third Proportional to 12,997.31 and 20,660.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,997.31 : 20,660.34 = 20,660.34 : x
2. Step 2: Convert to fraction form
   12,997.31/20,660.34 = 20,660.34/x
3. Step 3: Cross multiply
   12,997.31x = 20,660.34 × 20,660.34
4. Step 4: Simplify right side
   12,997.31x = 426,849,803.87
5. Step 5: Solve for x
   x = 426,849,803.87/12,997.31
6. Step 6: Final answer
   x = 32,841.39