Finding the Third Proportional to 30,808 and 67,480

Step by Step Solution

1. Step 1: Write the proportion equation
   30,808 : 67,480 = 67,480 : x
2. Step 2: Convert to fraction form
   30,808/67,480 = 67,480/x
3. Step 3: Cross multiply
   30,808x = 67,480 × 67,480
4. Step 4: Simplify right side
   30,808x = 4,553,550,400
5. Step 5: Solve for x
   x = 4,553,550,400/30,808
6. Step 6: Final answer
   x = 147,804.15