Finding the Third Proportional to 1,640,298 and 2,208,153

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640,298 : 2,208,153 = 2,208,153 : x
2. Step 2: Convert to fraction form
   1,640,298/2,208,153 = 2,208,153/x
3. Step 3: Cross multiply
   1,640,298x = 2,208,153 × 2,208,153
4. Step 4: Simplify right side
   1,640,298x = 4,875,939,671,409
5. Step 5: Solve for x
   x = 4,875,939,671,409/1,640,298
6. Step 6: Final answer
   x = 2,972,593.80