Finding the Third Proportional to 1,251,780 and 1,700,418

Step by Step Solution

1. Step 1: Write the proportion equation
   1,251,780 : 1,700,418 = 1,700,418 : x
2. Step 2: Convert to fraction form
   1,251,780/1,700,418 = 1,700,418/x
3. Step 3: Cross multiply
   1,251,780x = 1,700,418 × 1,700,418
4. Step 4: Simplify right side
   1,251,780x = 2,891,421,374,724
5. Step 5: Solve for x
   x = 2,891,421,374,724/1,251,780
6. Step 6: Final answer
   x = 2,309,847.88