Finding the Third Proportional to 890,186 and 1,979,392

Step by Step Solution

1. Step 1: Write the proportion equation
   890,186 : 1,979,392 = 1,979,392 : x
2. Step 2: Convert to fraction form
   890,186/1,979,392 = 1,979,392/x
3. Step 3: Cross multiply
   890,186x = 1,979,392 × 1,979,392
4. Step 4: Simplify right side
   890,186x = 3,917,992,689,664
5. Step 5: Solve for x
   x = 3,917,992,689,664/890,186
6. Step 6: Final answer
   x = 4,401,319.15