Finding the Third Proportional to 620,584 and 1,281,020

Step by Step Solution

1. Step 1: Write the proportion equation
   620,584 : 1,281,020 = 1,281,020 : x
2. Step 2: Convert to fraction form
   620,584/1,281,020 = 1,281,020/x
3. Step 3: Cross multiply
   620,584x = 1,281,020 × 1,281,020
4. Step 4: Simplify right side
   620,584x = 1,641,012,240,400
5. Step 5: Solve for x
   x = 1,641,012,240,400/620,584
6. Step 6: Final answer
   x = 2,644,303.17