Finding the Third Proportional to 1,355,287 and 1,806,809

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355,287 : 1,806,809 = 1,806,809 : x
2. Step 2: Convert to fraction form
   1,355,287/1,806,809 = 1,806,809/x
3. Step 3: Cross multiply
   1,355,287x = 1,806,809 × 1,806,809
4. Step 4: Simplify right side
   1,355,287x = 3,264,558,762,481
5. Step 5: Solve for x
   x = 3,264,558,762,481/1,355,287
6. Step 6: Final answer
   x = 2,408,758.26