Finding the Third Proportional to 1,218,788 and 2,640,976

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218,788 : 2,640,976 = 2,640,976 : x
2. Step 2: Convert to fraction form
   1,218,788/2,640,976 = 2,640,976/x
3. Step 3: Cross multiply
   1,218,788x = 2,640,976 × 2,640,976
4. Step 4: Simplify right side
   1,218,788x = 6,974,754,232,576
5. Step 5: Solve for x
   x = 6,974,754,232,576/1,218,788
6. Step 6: Final answer
   x = 5,722,696.84