Finding the Third Proportional to 1,218,794 and 2,640,988

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218,794 : 2,640,988 = 2,640,988 : x
2. Step 2: Convert to fraction form
   1,218,794/2,640,988 = 2,640,988/x
3. Step 3: Cross multiply
   1,218,794x = 2,640,988 × 2,640,988
4. Step 4: Simplify right side
   1,218,794x = 6,974,817,616,144
5. Step 5: Solve for x
   x = 6,974,817,616,144/1,218,794
6. Step 6: Final answer
   x = 5,722,720.67