Finding the Third Proportional to 1,077,808 and 1,661,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077,808 : 1,661,640 = 1,661,640 : x
2. Step 2: Convert to fraction form
   1,077,808/1,661,640 = 1,661,640/x
3. Step 3: Cross multiply
   1,077,808x = 1,661,640 × 1,661,640
4. Step 4: Simplify right side
   1,077,808x = 2,761,047,489,600
5. Step 5: Solve for x
   x = 2,761,047,489,600/1,077,808
6. Step 6: Final answer
   x = 2,561,724.81