Finding the Third Proportional to 331,320 and 441,429

Step by Step Solution

1. Step 1: Write the proportion equation
   331,320 : 441,429 = 441,429 : x
2. Step 2: Convert to fraction form
   331,320/441,429 = 441,429/x
3. Step 3: Cross multiply
   331,320x = 441,429 × 441,429
4. Step 4: Simplify right side
   331,320x = 194,859,562,041
5. Step 5: Solve for x
   x = 194,859,562,041/331,320
6. Step 6: Final answer
   x = 588,131.00