Finding the Third Proportional to 210,231 and 326,401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,231 : 326,401.50 = 326,401.50 : x
2. Step 2: Convert to fraction form
   210,231/326,401.50 = 326,401.50/x
3. Step 3: Cross multiply
   210,231x = 326,401.50 × 326,401.50
4. Step 4: Simplify right side
   210,231x = 106,537,939,202.25
5. Step 5: Solve for x
   x = 106,537,939,202.25/210,231
6. Step 6: Final answer
   x = 506,766.08