Finding the Third Proportional to 1,278,677 and 1,909,267

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,677 : 1,909,267 = 1,909,267 : x
2. Step 2: Convert to fraction form
   1,278,677/1,909,267 = 1,909,267/x
3. Step 3: Cross multiply
   1,278,677x = 1,909,267 × 1,909,267
4. Step 4: Simplify right side
   1,278,677x = 3,645,300,477,289
5. Step 5: Solve for x
   x = 3,645,300,477,289/1,278,677
6. Step 6: Final answer
   x = 2,850,837.61