Finding the Third Proportional to 210,830 and 326,099

Step by Step Solution

1. Step 1: Write the proportion equation
   210,830 : 326,099 = 326,099 : x
2. Step 2: Convert to fraction form
   210,830/326,099 = 326,099/x
3. Step 3: Cross multiply
   210,830x = 326,099 × 326,099
4. Step 4: Simplify right side
   210,830x = 106,340,557,801
5. Step 5: Solve for x
   x = 106,340,557,801/210,830
6. Step 6: Final answer
   x = 504,390.07