Finding the Third Proportional to 1,399,636 and 2,858,318

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399,636 : 2,858,318 = 2,858,318 : x
2. Step 2: Convert to fraction form
   1,399,636/2,858,318 = 2,858,318/x
3. Step 3: Cross multiply
   1,399,636x = 2,858,318 × 2,858,318
4. Step 4: Simplify right side
   1,399,636x = 8,169,981,789,124
5. Step 5: Solve for x
   x = 8,169,981,789,124/1,399,636
6. Step 6: Final answer
   x = 5,837,218.95