Finding the Third Proportional to 274,658 and 590,404

Step by Step Solution

1. Step 1: Write the proportion equation
   274,658 : 590,404 = 590,404 : x
2. Step 2: Convert to fraction form
   274,658/590,404 = 590,404/x
3. Step 3: Cross multiply
   274,658x = 590,404 × 590,404
4. Step 4: Simplify right side
   274,658x = 348,576,883,216
5. Step 5: Solve for x
   x = 348,576,883,216/274,658
6. Step 6: Final answer
   x = 1,269,130.64