Finding the Third Proportional to 30,712 and 67,976

Step by Step Solution

1. Step 1: Write the proportion equation
   30,712 : 67,976 = 67,976 : x
2. Step 2: Convert to fraction form
   30,712/67,976 = 67,976/x
3. Step 3: Cross multiply
   30,712x = 67,976 × 67,976
4. Step 4: Simplify right side
   30,712x = 4,620,736,576
5. Step 5: Solve for x
   x = 4,620,736,576/30,712
6. Step 6: Final answer
   x = 150,453.78