Finding the Third Proportional to 1,267,780 and 2,784,392

Step by Step Solution

1. Step 1: Write the proportion equation
   1,267,780 : 2,784,392 = 2,784,392 : x
2. Step 2: Convert to fraction form
   1,267,780/2,784,392 = 2,784,392/x
3. Step 3: Cross multiply
   1,267,780x = 2,784,392 × 2,784,392
4. Step 4: Simplify right side
   1,267,780x = 7,752,838,809,664
5. Step 5: Solve for x
   x = 7,752,838,809,664/1,267,780
6. Step 6: Final answer
   x = 6,115,287.20