Finding the Third Proportional to 31,747.78 and 69,398.44

Step by Step Solution

1. Step 1: Write the proportion equation
   31,747.78 : 69,398.44 = 69,398.44 : x
2. Step 2: Convert to fraction form
   31,747.78/69,398.44 = 69,398.44/x
3. Step 3: Cross multiply
   31,747.78x = 69,398.44 × 69,398.44
4. Step 4: Simplify right side
   31,747.78x = 4,816,143,127.44
5. Step 5: Solve for x
   x = 4,816,143,127.44/31,747.78
6. Step 6: Final answer
   x = 151,700.15