Finding the Third Proportional to 16,823.81 and 30,358.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,823.81 : 30,358.69 = 30,358.69 : x
2. Step 2: Convert to fraction form
   16,823.81/30,358.69 = 30,358.69/x
3. Step 3: Cross multiply
   16,823.81x = 30,358.69 × 30,358.69
4. Step 4: Simplify right side
   16,823.81x = 921,649,906.72
5. Step 5: Solve for x
   x = 921,649,906.72/16,823.81
6. Step 6: Final answer
   x = 54,782.46