Finding the Third Proportional to 722,448 and 1,581,921

Step by Step Solution

1. Step 1: Write the proportion equation
   722,448 : 1,581,921 = 1,581,921 : x
2. Step 2: Convert to fraction form
   722,448/1,581,921 = 1,581,921/x
3. Step 3: Cross multiply
   722,448x = 1,581,921 × 1,581,921
4. Step 4: Simplify right side
   722,448x = 2,502,474,050,241
5. Step 5: Solve for x
   x = 2,502,474,050,241/722,448
6. Step 6: Final answer
   x = 3,463,881.21