Finding the Third Proportional to 16,300 and 33,680

Step by Step Solution

1. Step 1: Write the proportion equation
   16,300 : 33,680 = 33,680 : x
2. Step 2: Convert to fraction form
   16,300/33,680 = 33,680/x
3. Step 3: Cross multiply
   16,300x = 33,680 × 33,680
4. Step 4: Simplify right side
   16,300x = 1,134,342,400
5. Step 5: Solve for x
   x = 1,134,342,400/16,300
6. Step 6: Final answer
   x = 69,591.56