Finding the Third Proportional to 140,007 and 307,231

Step by Step Solution

1. Step 1: Write the proportion equation
   140,007 : 307,231 = 307,231 : x
2. Step 2: Convert to fraction form
   140,007/307,231 = 307,231/x
3. Step 3: Cross multiply
   140,007x = 307,231 × 307,231
4. Step 4: Simplify right side
   140,007x = 94,390,887,361
5. Step 5: Solve for x
   x = 94,390,887,361/140,007
6. Step 6: Final answer
   x = 674,186.91