Finding the Third Proportional to 1,287,305 and 1,800,586

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,305 : 1,800,586 = 1,800,586 : x
2. Step 2: Convert to fraction form
   1,287,305/1,800,586 = 1,800,586/x
3. Step 3: Cross multiply
   1,287,305x = 1,800,586 × 1,800,586
4. Step 4: Simplify right side
   1,287,305x = 3,242,109,943,396
5. Step 5: Solve for x
   x = 3,242,109,943,396/1,287,305
6. Step 6: Final answer
   x = 2,518,525.09