Finding the Third Proportional to 1,261,660 and 1,890,616

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261,660 : 1,890,616 = 1,890,616 : x
2. Step 2: Convert to fraction form
   1,261,660/1,890,616 = 1,890,616/x
3. Step 3: Cross multiply
   1,261,660x = 1,890,616 × 1,890,616
4. Step 4: Simplify right side
   1,261,660x = 3,574,428,859,456
5. Step 5: Solve for x
   x = 3,574,428,859,456/1,261,660
6. Step 6: Final answer
   x = 2,833,115.78