Finding the Third Proportional to 300,789 and 401,394

Step by Step Solution

1. Step 1: Write the proportion equation
   300,789 : 401,394 = 401,394 : x
2. Step 2: Convert to fraction form
   300,789/401,394 = 401,394/x
3. Step 3: Cross multiply
   300,789x = 401,394 × 401,394
4. Step 4: Simplify right side
   300,789x = 161,117,143,236
5. Step 5: Solve for x
   x = 161,117,143,236/300,789
6. Step 6: Final answer
   x = 535,648.39