Finding the Third Proportional to 30,670 and 45,680

Step by Step Solution

1. Step 1: Write the proportion equation
   30,670 : 45,680 = 45,680 : x
2. Step 2: Convert to fraction form
   30,670/45,680 = 45,680/x
3. Step 3: Cross multiply
   30,670x = 45,680 × 45,680
4. Step 4: Simplify right side
   30,670x = 2,086,662,400
5. Step 5: Solve for x
   x = 2,086,662,400/30,670
6. Step 6: Final answer
   x = 68,035.94