Finding the Third Proportional to 30,968 and 67,870

Step by Step Solution

1. Step 1: Write the proportion equation
   30,968 : 67,870 = 67,870 : x
2. Step 2: Convert to fraction form
   30,968/67,870 = 67,870/x
3. Step 3: Cross multiply
   30,968x = 67,870 × 67,870
4. Step 4: Simplify right side
   30,968x = 4,606,336,900
5. Step 5: Solve for x
   x = 4,606,336,900/30,968
6. Step 6: Final answer
   x = 148,745.06