Finding the Third Proportional to 581,810 and 1,216,580

Step by Step Solution

1. Step 1: Write the proportion equation
   581,810 : 1,216,580 = 1,216,580 : x
2. Step 2: Convert to fraction form
   581,810/1,216,580 = 1,216,580/x
3. Step 3: Cross multiply
   581,810x = 1,216,580 × 1,216,580
4. Step 4: Simplify right side
   581,810x = 1,480,066,896,400
5. Step 5: Solve for x
   x = 1,480,066,896,400/581,810
6. Step 6: Final answer
   x = 2,543,900.75