Finding the Third Proportional to 31,516.12 and 68,282.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,516.12 : 68,282.37 = 68,282.37 : x
2. Step 2: Convert to fraction form
   31,516.12/68,282.37 = 68,282.37/x
3. Step 3: Cross multiply
   31,516.12x = 68,282.37 × 68,282.37
4. Step 4: Simplify right side
   31,516.12x = 4,662,481,668.73
5. Step 5: Solve for x
   x = 4,662,481,668.73/31,516.12
6. Step 6: Final answer
   x = 147,939.59