Finding the Third Proportional to 149,326 and 231,211.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,326 : 231,211.50 = 231,211.50 : x
2. Step 2: Convert to fraction form
   149,326/231,211.50 = 231,211.50/x
3. Step 3: Cross multiply
   149,326x = 231,211.50 × 231,211.50
4. Step 4: Simplify right side
   149,326x = 53,458,757,732.25
5. Step 5: Solve for x
   x = 53,458,757,732.25/149,326
6. Step 6: Final answer
   x = 358,000.33