Finding the Third Proportional to 231,046 and 309,049

Step by Step Solution

1. Step 1: Write the proportion equation
   231,046 : 309,049 = 309,049 : x
2. Step 2: Convert to fraction form
   231,046/309,049 = 309,049/x
3. Step 3: Cross multiply
   231,046x = 309,049 × 309,049
4. Step 4: Simplify right side
   231,046x = 95,511,284,401
5. Step 5: Solve for x
   x = 95,511,284,401/231,046
6. Step 6: Final answer
   x = 413,386.44