Finding the Third Proportional to 1,640,286 and 2,208,142

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640,286 : 2,208,142 = 2,208,142 : x
2. Step 2: Convert to fraction form
   1,640,286/2,208,142 = 2,208,142/x
3. Step 3: Cross multiply
   1,640,286x = 2,208,142 × 2,208,142
4. Step 4: Simplify right side
   1,640,286x = 4,875,891,092,164
5. Step 5: Solve for x
   x = 4,875,891,092,164/1,640,286
6. Step 6: Final answer
   x = 2,972,585.93