Finding the Third Proportional to 890,406 and 1,980,150

Step by Step Solution

1. Step 1: Write the proportion equation
   890,406 : 1,980,150 = 1,980,150 : x
2. Step 2: Convert to fraction form
   890,406/1,980,150 = 1,980,150/x
3. Step 3: Cross multiply
   890,406x = 1,980,150 × 1,980,150
4. Step 4: Simplify right side
   890,406x = 3,920,994,022,500
5. Step 5: Solve for x
   x = 3,920,994,022,500/890,406
6. Step 6: Final answer
   x = 4,403,602.43