Finding the Third Proportional to 725,504 and 1,591,040

Step by Step Solution

1. Step 1: Write the proportion equation
   725,504 : 1,591,040 = 1,591,040 : x
2. Step 2: Convert to fraction form
   725,504/1,591,040 = 1,591,040/x
3. Step 3: Cross multiply
   725,504x = 1,591,040 × 1,591,040
4. Step 4: Simplify right side
   725,504x = 2,531,408,281,600
5. Step 5: Solve for x
   x = 2,531,408,281,600/725,504
6. Step 6: Final answer
   x = 3,489,172.05