Finding the Third Proportional to 81,951.38 and 123,680.91

Step by Step Solution

1. Step 1: Write the proportion equation
   81,951.38 : 123,680.91 = 123,680.91 : x
2. Step 2: Convert to fraction form
   81,951.38/123,680.91 = 123,680.91/x
3. Step 3: Cross multiply
   81,951.38x = 123,680.91 × 123,680.91
4. Step 4: Simplify right side
   81,951.38x = 15,296,966,570.82
5. Step 5: Solve for x
   x = 15,296,966,570.82/81,951.38
6. Step 6: Final answer
   x = 186,659.06