Finding the Third Proportional to 213,094.75 and 323,530

Step by Step Solution

1. Step 1: Write the proportion equation
   213,094.75 : 323,530 = 323,530 : x
2. Step 2: Convert to fraction form
   213,094.75/323,530 = 323,530/x
3. Step 3: Cross multiply
   213,094.75x = 323,530 × 323,530
4. Step 4: Simplify right side
   213,094.75x = 104,671,660,900
5. Step 5: Solve for x
   x = 104,671,660,900/213,094.75
6. Step 6: Final answer
   x = 491,197.75