Finding the Third Proportional to 4,556.72 and 9,429.54

Step by Step Solution

1. Step 1: Write the proportion equation
   4,556.72 : 9,429.54 = 9,429.54 : x
2. Step 2: Convert to fraction form
   4,556.72/9,429.54 = 9,429.54/x
3. Step 3: Cross multiply
   4,556.72x = 9,429.54 × 9,429.54
4. Step 4: Simplify right side
   4,556.72x = 88,916,206.93
5. Step 5: Solve for x
   x = 88,916,206.93/4,556.72
6. Step 6: Final answer
   x = 19,513.18