Finding the Third Proportional to 12,677.55 and 19,707.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,677.55 : 19,707.47 = 19,707.47 : x
2. Step 2: Convert to fraction form
   12,677.55/19,707.47 = 19,707.47/x
3. Step 3: Cross multiply
   12,677.55x = 19,707.47 × 19,707.47
4. Step 4: Simplify right side
   12,677.55x = 388,384,324.53
5. Step 5: Solve for x
   x = 388,384,324.53/12,677.55
6. Step 6: Final answer
   x = 30,635.59