Finding the Third Proportional to 890,428 and 2,099,818

Step by Step Solution

1. Step 1: Write the proportion equation
   890,428 : 2,099,818 = 2,099,818 : x
2. Step 2: Convert to fraction form
   890,428/2,099,818 = 2,099,818/x
3. Step 3: Cross multiply
   890,428x = 2,099,818 × 2,099,818
4. Step 4: Simplify right side
   890,428x = 4,409,235,633,124
5. Step 5: Solve for x
   x = 4,409,235,633,124/890,428
6. Step 6: Final answer
   x = 4,951,816.02