Finding the Third Proportional to 31,349 and 67,012

Step by Step Solution

1. Step 1: Write the proportion equation
   31,349 : 67,012 = 67,012 : x
2. Step 2: Convert to fraction form
   31,349/67,012 = 67,012/x
3. Step 3: Cross multiply
   31,349x = 67,012 × 67,012
4. Step 4: Simplify right side
   31,349x = 4,490,608,144
5. Step 5: Solve for x
   x = 4,490,608,144/31,349
6. Step 6: Final answer
   x = 143,245.66