Finding the Third Proportional to 31,450 and 68,442

Step by Step Solution

1. Step 1: Write the proportion equation
   31,450 : 68,442 = 68,442 : x
2. Step 2: Convert to fraction form
   31,450/68,442 = 68,442/x
3. Step 3: Cross multiply
   31,450x = 68,442 × 68,442
4. Step 4: Simplify right side
   31,450x = 4,684,307,364
5. Step 5: Solve for x
   x = 4,684,307,364/31,450
6. Step 6: Final answer
   x = 148,944.59