Finding the Third Proportional to 394,487.88 and 862,786.69

Step by Step Solution

1. Step 1: Write the proportion equation
   394,487.88 : 862,786.69 = 862,786.69 : x
2. Step 2: Convert to fraction form
   394,487.88/862,786.69 = 862,786.69/x
3. Step 3: Cross multiply
   394,487.88x = 862,786.69 × 862,786.69
4. Step 4: Simplify right side
   394,487.88x = 744,400,868,127.22
5. Step 5: Solve for x
   x = 744,400,868,127.22/394,487.88
6. Step 6: Final answer
   x = 1,887,005.70