Finding the Third Proportional to 890,170 and 1,979,360

Step by Step Solution

1. Step 1: Write the proportion equation
   890,170 : 1,979,360 = 1,979,360 : x
2. Step 2: Convert to fraction form
   890,170/1,979,360 = 1,979,360/x
3. Step 3: Cross multiply
   890,170x = 1,979,360 × 1,979,360
4. Step 4: Simplify right side
   890,170x = 3,917,866,009,600
5. Step 5: Solve for x
   x = 3,917,866,009,600/890,170
6. Step 6: Final answer
   x = 4,401,255.95