Finding the Third Proportional to 2,146,290 and 4,548,459

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146,290 : 4,548,459 = 4,548,459 : x
2. Step 2: Convert to fraction form
   2,146,290/4,548,459 = 4,548,459/x
3. Step 3: Cross multiply
   2,146,290x = 4,548,459 × 4,548,459
4. Step 4: Simplify right side
   2,146,290x = 20,688,479,274,681
5. Step 5: Solve for x
   x = 20,688,479,274,681/2,146,290
6. Step 6: Final answer
   x = 9,639,181.69