Finding the Third Proportional to 30,672 and 67,104

Step by Step Solution

1. Step 1: Write the proportion equation
   30,672 : 67,104 = 67,104 : x
2. Step 2: Convert to fraction form
   30,672/67,104 = 67,104/x
3. Step 3: Cross multiply
   30,672x = 67,104 × 67,104
4. Step 4: Simplify right side
   30,672x = 4,502,946,816
5. Step 5: Solve for x
   x = 4,502,946,816/30,672
6. Step 6: Final answer
   x = 146,809.69