Finding the Third Proportional to 1,209,726 and 2,640,816

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,726 : 2,640,816 = 2,640,816 : x
2. Step 2: Convert to fraction form
   1,209,726/2,640,816 = 2,640,816/x
3. Step 3: Cross multiply
   1,209,726x = 2,640,816 × 2,640,816
4. Step 4: Simplify right side
   1,209,726x = 6,973,909,145,856
5. Step 5: Solve for x
   x = 6,973,909,145,856/1,209,726
6. Step 6: Final answer
   x = 5,764,866.71