Finding the Third Proportional to 27,678.94 and 42,976.69

Step by Step Solution

1. Step 1: Write the proportion equation
   27,678.94 : 42,976.69 = 42,976.69 : x
2. Step 2: Convert to fraction form
   27,678.94/42,976.69 = 42,976.69/x
3. Step 3: Cross multiply
   27,678.94x = 42,976.69 × 42,976.69
4. Step 4: Simplify right side
   27,678.94x = 1,846,995,668.47
5. Step 5: Solve for x
   x = 1,846,995,668.47/27,678.94
6. Step 6: Final answer
   x = 66,729.28