Finding the Third Proportional to 109,018 and 231,230

Step by Step Solution

1. Step 1: Write the proportion equation
   109,018 : 231,230 = 231,230 : x
2. Step 2: Convert to fraction form
   109,018/231,230 = 231,230/x
3. Step 3: Cross multiply
   109,018x = 231,230 × 231,230
4. Step 4: Simplify right side
   109,018x = 53,467,312,900
5. Step 5: Solve for x
   x = 53,467,312,900/109,018
6. Step 6: Final answer
   x = 490,444.82