Finding the Third Proportional to 1,253,580 and 1,909,740

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253,580 : 1,909,740 = 1,909,740 : x
2. Step 2: Convert to fraction form
   1,253,580/1,909,740 = 1,909,740/x
3. Step 3: Cross multiply
   1,253,580x = 1,909,740 × 1,909,740
4. Step 4: Simplify right side
   1,253,580x = 3,647,106,867,600
5. Step 5: Solve for x
   x = 3,647,106,867,600/1,253,580
6. Step 6: Final answer
   x = 2,909,353.11