Finding the Third Proportional to 216,053.50 and 311,233

Step by Step Solution

1. Step 1: Write the proportion equation
   216,053.50 : 311,233 = 311,233 : x
2. Step 2: Convert to fraction form
   216,053.50/311,233 = 311,233/x
3. Step 3: Cross multiply
   216,053.50x = 311,233 × 311,233
4. Step 4: Simplify right side
   216,053.50x = 96,865,980,289
5. Step 5: Solve for x
   x = 96,865,980,289/216,053.50
6. Step 6: Final answer
   x = 448,342.56