Finding the Third Proportional to 1,640,291 and 2,208,147

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640,291 : 2,208,147 = 2,208,147 : x
2. Step 2: Convert to fraction form
   1,640,291/2,208,147 = 2,208,147/x
3. Step 3: Cross multiply
   1,640,291x = 2,208,147 × 2,208,147
4. Step 4: Simplify right side
   1,640,291x = 4,875,913,173,609
5. Step 5: Solve for x
   x = 4,875,913,173,609/1,640,291
6. Step 6: Final answer
   x = 2,972,590.34