Finding the Third Proportional to 16.45 and 34.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16.45 : 34.80 = 34.80 : x
2. Step 2: Convert to fraction form
   16.45/34.80 = 34.80/x
3. Step 3: Cross multiply
   16.45x = 34.80 × 34.80
4. Step 4: Simplify right side
   16.45x = 1,211.37
5. Step 5: Solve for x
   x = 1,211.37/16.45
6. Step 6: Final answer
   x = 73.63