Finding the Third Proportional to 1,372,909 and 2,859,447

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372,909 : 2,859,447 = 2,859,447 : x
2. Step 2: Convert to fraction form
   1,372,909/2,859,447 = 2,859,447/x
3. Step 3: Cross multiply
   1,372,909x = 2,859,447 × 2,859,447
4. Step 4: Simplify right side
   1,372,909x = 8,176,437,145,809
5. Step 5: Solve for x
   x = 8,176,437,145,809/1,372,909
6. Step 6: Final answer
   x = 5,955,556.52