Finding the Third Proportional to 138,242 and 302,404

Step by Step Solution

1. Step 1: Write the proportion equation
   138,242 : 302,404 = 302,404 : x
2. Step 2: Convert to fraction form
   138,242/302,404 = 302,404/x
3. Step 3: Cross multiply
   138,242x = 302,404 × 302,404
4. Step 4: Simplify right side
   138,242x = 91,448,179,216
5. Step 5: Solve for x
   x = 91,448,179,216/138,242
6. Step 6: Final answer
   x = 661,507.93