Finding the Third Proportional to 308,238 and 451,692

Step by Step Solution

1. Step 1: Write the proportion equation
   308,238 : 451,692 = 451,692 : x
2. Step 2: Convert to fraction form
   308,238/451,692 = 451,692/x
3. Step 3: Cross multiply
   308,238x = 451,692 × 451,692
4. Step 4: Simplify right side
   308,238x = 204,025,662,864
5. Step 5: Solve for x
   x = 204,025,662,864/308,238
6. Step 6: Final answer
   x = 661,909.51