Finding the Third Proportional to 1,609,911 and 2,178,671

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609,911 : 2,178,671 = 2,178,671 : x
2. Step 2: Convert to fraction form
   1,609,911/2,178,671 = 2,178,671/x
3. Step 3: Cross multiply
   1,609,911x = 2,178,671 × 2,178,671
4. Step 4: Simplify right side
   1,609,911x = 4,746,607,326,241
5. Step 5: Solve for x
   x = 4,746,607,326,241/1,609,911
6. Step 6: Final answer
   x = 2,948,366.29