Finding the Third Proportional to 521,609 and 1,259,186

Step by Step Solution

1. Step 1: Write the proportion equation
   521,609 : 1,259,186 = 1,259,186 : x
2. Step 2: Convert to fraction form
   521,609/1,259,186 = 1,259,186/x
3. Step 3: Cross multiply
   521,609x = 1,259,186 × 1,259,186
4. Step 4: Simplify right side
   521,609x = 1,585,549,382,596
5. Step 5: Solve for x
   x = 1,585,549,382,596/521,609
6. Step 6: Final answer
   x = 3,039,727.81