Finding the Third Proportional to 107,731.69 and 218,541.38

Step by Step Solution

1. Step 1: Write the proportion equation
   107,731.69 : 218,541.38 = 218,541.38 : x
2. Step 2: Convert to fraction form
   107,731.69/218,541.38 = 218,541.38/x
3. Step 3: Cross multiply
   107,731.69x = 218,541.38 × 218,541.38
4. Step 4: Simplify right side
   107,731.69x = 47,760,332,586.89
5. Step 5: Solve for x
   x = 47,760,332,586.89/107,731.69
6. Step 6: Final answer
   x = 443,326.69