Finding the Third Proportional to 620,578 and 1,281,008

Step by Step Solution

1. Step 1: Write the proportion equation
   620,578 : 1,281,008 = 1,281,008 : x
2. Step 2: Convert to fraction form
   620,578/1,281,008 = 1,281,008/x
3. Step 3: Cross multiply
   620,578x = 1,281,008 × 1,281,008
4. Step 4: Simplify right side
   620,578x = 1,640,981,496,064
5. Step 5: Solve for x
   x = 1,640,981,496,064/620,578
6. Step 6: Final answer
   x = 2,644,279.20