Finding the Third Proportional to 209,392 and 458,660

Step by Step Solution

1. Step 1: Write the proportion equation
   209,392 : 458,660 = 458,660 : x
2. Step 2: Convert to fraction form
   209,392/458,660 = 458,660/x
3. Step 3: Cross multiply
   209,392x = 458,660 × 458,660
4. Step 4: Simplify right side
   209,392x = 210,368,995,600
5. Step 5: Solve for x
   x = 210,368,995,600/209,392
6. Step 6: Final answer
   x = 1,004,665.87