Finding the Third Proportional to 13,057.88 and 19,892.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,057.88 : 19,892.81 = 19,892.81 : x
2. Step 2: Convert to fraction form
   13,057.88/19,892.81 = 19,892.81/x
3. Step 3: Cross multiply
   13,057.88x = 19,892.81 × 19,892.81
4. Step 4: Simplify right side
   13,057.88x = 395,723,989.16
5. Step 5: Solve for x
   x = 395,723,989.16/13,057.88
6. Step 6: Final answer
   x = 30,305.39