Finding the Third Proportional to 49,890.75 and 71,721.38

Step by Step Solution

1. Step 1: Write the proportion equation
   49,890.75 : 71,721.38 = 71,721.38 : x
2. Step 2: Convert to fraction form
   49,890.75/71,721.38 = 71,721.38/x
3. Step 3: Cross multiply
   49,890.75x = 71,721.38 × 71,721.38
4. Step 4: Simplify right side
   49,890.75x = 5,143,955,631.89
5. Step 5: Solve for x
   x = 5,143,955,631.89/49,890.75
6. Step 6: Final answer
   x = 103,104.40