Finding the Third Proportional to 470,790 and 707,238

Step by Step Solution

1. Step 1: Write the proportion equation
   470,790 : 707,238 = 707,238 : x
2. Step 2: Convert to fraction form
   470,790/707,238 = 707,238/x
3. Step 3: Cross multiply
   470,790x = 707,238 × 707,238
4. Step 4: Simplify right side
   470,790x = 500,185,588,644
5. Step 5: Solve for x
   x = 500,185,588,644/470,790
6. Step 6: Final answer
   x = 1,062,438.86