Finding the Third Proportional to 219,090 and 331,005.38

Step by Step Solution

1. Step 1: Write the proportion equation
   219,090 : 331,005.38 = 331,005.38 : x
2. Step 2: Convert to fraction form
   219,090/331,005.38 = 331,005.38/x
3. Step 3: Cross multiply
   219,090x = 331,005.38 × 331,005.38
4. Step 4: Simplify right side
   219,090x = 109,564,558,278.89
5. Step 5: Solve for x
   x = 109,564,558,278.89/219,090
6. Step 6: Final answer
   x = 500,089.27