Finding the Third Proportional to 109,009.50 and 231,231

Step by Step Solution

1. Step 1: Write the proportion equation
   109,009.50 : 231,231 = 231,231 : x
2. Step 2: Convert to fraction form
   109,009.50/231,231 = 231,231/x
3. Step 3: Cross multiply
   109,009.50x = 231,231 × 231,231
4. Step 4: Simplify right side
   109,009.50x = 53,467,775,361
5. Step 5: Solve for x
   x = 53,467,775,361/109,009.50
6. Step 6: Final answer
   x = 490,487.30