Finding the Third Proportional to 2,857,364 and 3,891,198

Step by Step Solution

1. Step 1: Write the proportion equation
   2,857,364 : 3,891,198 = 3,891,198 : x
2. Step 2: Convert to fraction form
   2,857,364/3,891,198 = 3,891,198/x
3. Step 3: Cross multiply
   2,857,364x = 3,891,198 × 3,891,198
4. Step 4: Simplify right side
   2,857,364x = 15,141,421,875,204
5. Step 5: Solve for x
   x = 15,141,421,875,204/2,857,364
6. Step 6: Final answer
   x = 5,299,087.51