Finding the Third Proportional to 477,390 and 1,039,992

Step by Step Solution

1. Step 1: Write the proportion equation
   477,390 : 1,039,992 = 1,039,992 : x
2. Step 2: Convert to fraction form
   477,390/1,039,992 = 1,039,992/x
3. Step 3: Cross multiply
   477,390x = 1,039,992 × 1,039,992
4. Step 4: Simplify right side
   477,390x = 1,081,583,360,064
5. Step 5: Solve for x
   x = 1,081,583,360,064/477,390
6. Step 6: Final answer
   x = 2,265,617.96