Finding the Third Proportional to 19,899 and 31,059

Step by Step Solution

1. Step 1: Write the proportion equation
   19,899 : 31,059 = 31,059 : x
2. Step 2: Convert to fraction form
   19,899/31,059 = 31,059/x
3. Step 3: Cross multiply
   19,899x = 31,059 × 31,059
4. Step 4: Simplify right side
   19,899x = 964,661,481
5. Step 5: Solve for x
   x = 964,661,481/19,899
6. Step 6: Final answer
   x = 48,477.89