Finding the Third Proportional to 210,320 and 458,707

Step by Step Solution

1. Step 1: Write the proportion equation
   210,320 : 458,707 = 458,707 : x
2. Step 2: Convert to fraction form
   210,320/458,707 = 458,707/x
3. Step 3: Cross multiply
   210,320x = 458,707 × 458,707
4. Step 4: Simplify right side
   210,320x = 210,412,111,849
5. Step 5: Solve for x
   x = 210,412,111,849/210,320
6. Step 6: Final answer
   x = 1,000,437.96