Finding the Third Proportional to 12,911.06 and 19,951.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,911.06 : 19,951.03 = 19,951.03 : x
2. Step 2: Convert to fraction form
   12,911.06/19,951.03 = 19,951.03/x
3. Step 3: Cross multiply
   12,911.06x = 19,951.03 × 19,951.03
4. Step 4: Simplify right side
   12,911.06x = 398,043,647.94
5. Step 5: Solve for x
   x = 398,043,647.94/12,911.06
6. Step 6: Final answer
   x = 30,829.66