Finding the Third Proportional to 215,271 and 331,990.50

Step by Step Solution

1. Step 1: Write the proportion equation
   215,271 : 331,990.50 = 331,990.50 : x
2. Step 2: Convert to fraction form
   215,271/331,990.50 = 331,990.50/x
3. Step 3: Cross multiply
   215,271x = 331,990.50 × 331,990.50
4. Step 4: Simplify right side
   215,271x = 110,217,692,090.25
5. Step 5: Solve for x
   x = 110,217,692,090.25/215,271
6. Step 6: Final answer
   x = 511,995.08