Finding the Third Proportional to 249,180 and 584,990

Step by Step Solution

1. Step 1: Write the proportion equation
   249,180 : 584,990 = 584,990 : x
2. Step 2: Convert to fraction form
   249,180/584,990 = 584,990/x
3. Step 3: Cross multiply
   249,180x = 584,990 × 584,990
4. Step 4: Simplify right side
   249,180x = 342,213,300,100
5. Step 5: Solve for x
   x = 342,213,300,100/249,180
6. Step 6: Final answer
   x = 1,373,357.81