Finding the Third Proportional to 513,408 and 1,059,540

Step by Step Solution

1. Step 1: Write the proportion equation
   513,408 : 1,059,540 = 1,059,540 : x
2. Step 2: Convert to fraction form
   513,408/1,059,540 = 1,059,540/x
3. Step 3: Cross multiply
   513,408x = 1,059,540 × 1,059,540
4. Step 4: Simplify right side
   513,408x = 1,122,625,011,600
5. Step 5: Solve for x
   x = 1,122,625,011,600/513,408
6. Step 6: Final answer
   x = 2,186,613.79