Finding the Third Proportional to 287,448 and 604,665

Step by Step Solution

1. Step 1: Write the proportion equation
   287,448 : 604,665 = 604,665 : x
2. Step 2: Convert to fraction form
   287,448/604,665 = 604,665/x
3. Step 3: Cross multiply
   287,448x = 604,665 × 604,665
4. Step 4: Simplify right side
   287,448x = 365,619,762,225
5. Step 5: Solve for x
   x = 365,619,762,225/287,448
6. Step 6: Final answer
   x = 1,271,950.97