Finding the Third Proportional to 574,585 and 909,390

Step by Step Solution

1. Step 1: Write the proportion equation
   574,585 : 909,390 = 909,390 : x
2. Step 2: Convert to fraction form
   574,585/909,390 = 909,390/x
3. Step 3: Cross multiply
   574,585x = 909,390 × 909,390
4. Step 4: Simplify right side
   574,585x = 826,990,172,100
5. Step 5: Solve for x
   x = 826,990,172,100/574,585
6. Step 6: Final answer
   x = 1,439,282.56