Finding the Third Proportional to 1,640,238 and 2,208,086

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640,238 : 2,208,086 = 2,208,086 : x
2. Step 2: Convert to fraction form
   1,640,238/2,208,086 = 2,208,086/x
3. Step 3: Cross multiply
   1,640,238x = 2,208,086 × 2,208,086
4. Step 4: Simplify right side
   1,640,238x = 4,875,643,783,396
5. Step 5: Solve for x
   x = 4,875,643,783,396/1,640,238
6. Step 6: Final answer
   x = 2,972,522.15