Finding the Third Proportional to 226,390 and 487,556

Step by Step Solution

1. Step 1: Write the proportion equation
   226,390 : 487,556 = 487,556 : x
2. Step 2: Convert to fraction form
   226,390/487,556 = 487,556/x
3. Step 3: Cross multiply
   226,390x = 487,556 × 487,556
4. Step 4: Simplify right side
   226,390x = 237,710,853,136
5. Step 5: Solve for x
   x = 237,710,853,136/226,390
6. Step 6: Final answer
   x = 1,050,005.98