Finding the Third Proportional to 14,105.39 and 30,640.78

Step by Step Solution

1. Step 1: Write the proportion equation
   14,105.39 : 30,640.78 = 30,640.78 : x
2. Step 2: Convert to fraction form
   14,105.39/30,640.78 = 30,640.78/x
3. Step 3: Cross multiply
   14,105.39x = 30,640.78 × 30,640.78
4. Step 4: Simplify right side
   14,105.39x = 938,857,475.61
5. Step 5: Solve for x
   x = 938,857,475.61/14,105.39
6. Step 6: Final answer
   x = 66,560.19