Finding the Third Proportional to 12,790.13 and 19,731.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,790.13 : 19,731.94 = 19,731.94 : x
2. Step 2: Convert to fraction form
   12,790.13/19,731.94 = 19,731.94/x
3. Step 3: Cross multiply
   12,790.13x = 19,731.94 × 19,731.94
4. Step 4: Simplify right side
   12,790.13x = 389,349,357.50
5. Step 5: Solve for x
   x = 389,349,357.50/12,790.13
6. Step 6: Final answer
   x = 30,441.40