Finding the Third Proportional to 31,930 and 68,666

Step by Step Solution

1. Step 1: Write the proportion equation
   31,930 : 68,666 = 68,666 : x
2. Step 2: Convert to fraction form
   31,930/68,666 = 68,666/x
3. Step 3: Cross multiply
   31,930x = 68,666 × 68,666
4. Step 4: Simplify right side
   31,930x = 4,715,019,556
5. Step 5: Solve for x
   x = 4,715,019,556/31,930
6. Step 6: Final answer
   x = 147,667.38