Finding the Third Proportional to 153,109.50 and 225,288

Step by Step Solution

1. Step 1: Write the proportion equation
   153,109.50 : 225,288 = 225,288 : x
2. Step 2: Convert to fraction form
   153,109.50/225,288 = 225,288/x
3. Step 3: Cross multiply
   153,109.50x = 225,288 × 225,288
4. Step 4: Simplify right side
   153,109.50x = 50,754,682,944
5. Step 5: Solve for x
   x = 50,754,682,944/153,109.50
6. Step 6: Final answer
   x = 331,492.71