Finding the Third Proportional to 31,376 and 67,118

Step by Step Solution

1. Step 1: Write the proportion equation
   31,376 : 67,118 = 67,118 : x
2. Step 2: Convert to fraction form
   31,376/67,118 = 67,118/x
3. Step 3: Cross multiply
   31,376x = 67,118 × 67,118
4. Step 4: Simplify right side
   31,376x = 4,504,825,924
5. Step 5: Solve for x
   x = 4,504,825,924/31,376
6. Step 6: Final answer
   x = 143,575.53