Finding the Third Proportional to 209,008 and 457,280

Step by Step Solution

1. Step 1: Write the proportion equation
   209,008 : 457,280 = 457,280 : x
2. Step 2: Convert to fraction form
   209,008/457,280 = 457,280/x
3. Step 3: Cross multiply
   209,008x = 457,280 × 457,280
4. Step 4: Simplify right side
   209,008x = 209,104,998,400
5. Step 5: Solve for x
   x = 209,104,998,400/209,008
6. Step 6: Final answer
   x = 1,000,464.09