Finding the Third Proportional to 2,218,590 and 3,170,421

Step by Step Solution

1. Step 1: Write the proportion equation
   2,218,590 : 3,170,421 = 3,170,421 : x
2. Step 2: Convert to fraction form
   2,218,590/3,170,421 = 3,170,421/x
3. Step 3: Cross multiply
   2,218,590x = 3,170,421 × 3,170,421
4. Step 4: Simplify right side
   2,218,590x = 10,051,569,317,241
5. Step 5: Solve for x
   x = 10,051,569,317,241/2,218,590
6. Step 6: Final answer
   x = 4,530,611.48