Finding the Third Proportional to 302,238 and 661,788

Step by Step Solution

1. Step 1: Write the proportion equation
   302,238 : 661,788 = 661,788 : x
2. Step 2: Convert to fraction form
   302,238/661,788 = 661,788/x
3. Step 3: Cross multiply
   302,238x = 661,788 × 661,788
4. Step 4: Simplify right side
   302,238x = 437,963,356,944
5. Step 5: Solve for x
   x = 437,963,356,944/302,238
6. Step 6: Final answer
   x = 1,449,067.81