Finding the Third Proportional to 401,368 and 550,384

Step by Step Solution

1. Step 1: Write the proportion equation
   401,368 : 550,384 = 550,384 : x
2. Step 2: Convert to fraction form
   401,368/550,384 = 550,384/x
3. Step 3: Cross multiply
   401,368x = 550,384 × 550,384
4. Step 4: Simplify right side
   401,368x = 302,922,547,456
5. Step 5: Solve for x
   x = 302,922,547,456/401,368
6. Step 6: Final answer
   x = 754,725.21