Finding the Third Proportional to 209,272.50 and 457,668

Step by Step Solution

1. Step 1: Write the proportion equation
   209,272.50 : 457,668 = 457,668 : x
2. Step 2: Convert to fraction form
   209,272.50/457,668 = 457,668/x
3. Step 3: Cross multiply
   209,272.50x = 457,668 × 457,668
4. Step 4: Simplify right side
   209,272.50x = 209,459,998,224
5. Step 5: Solve for x
   x = 209,459,998,224/209,272.50
6. Step 6: Final answer
   x = 1,000,895.95