Finding the Third Proportional to 389,037 and 805,074

Step by Step Solution

1. Step 1: Write the proportion equation
   389,037 : 805,074 = 805,074 : x
2. Step 2: Convert to fraction form
   389,037/805,074 = 805,074/x
3. Step 3: Cross multiply
   389,037x = 805,074 × 805,074
4. Step 4: Simplify right side
   389,037x = 648,144,145,476
5. Step 5: Solve for x
   x = 648,144,145,476/389,037
6. Step 6: Final answer
   x = 1,666,021.86