Finding the Third Proportional to 1,609,915 and 2,178,677

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609,915 : 2,178,677 = 2,178,677 : x
2. Step 2: Convert to fraction form
   1,609,915/2,178,677 = 2,178,677/x
3. Step 3: Cross multiply
   1,609,915x = 2,178,677 × 2,178,677
4. Step 4: Simplify right side
   1,609,915x = 4,746,633,470,329
5. Step 5: Solve for x
   x = 4,746,633,470,329/1,609,915
6. Step 6: Final answer
   x = 2,948,375.21