Finding the Third Proportional to 214,921.69 and 331,404.75

Step by Step Solution

1. Step 1: Write the proportion equation
   214,921.69 : 331,404.75 = 331,404.75 : x
2. Step 2: Convert to fraction form
   214,921.69/331,404.75 = 331,404.75/x
3. Step 3: Cross multiply
   214,921.69x = 331,404.75 × 331,404.75
4. Step 4: Simplify right side
   214,921.69x = 109,829,108,322.56
5. Step 5: Solve for x
   x = 109,829,108,322.56/214,921.69
6. Step 6: Final answer
   x = 511,019.20