Finding the Third Proportional to 840,464 and 1,257,726

Step by Step Solution

1. Step 1: Write the proportion equation
   840,464 : 1,257,726 = 1,257,726 : x
2. Step 2: Convert to fraction form
   840,464/1,257,726 = 1,257,726/x
3. Step 3: Cross multiply
   840,464x = 1,257,726 × 1,257,726
4. Step 4: Simplify right side
   840,464x = 1,581,874,691,076
5. Step 5: Solve for x
   x = 1,581,874,691,076/840,464
6. Step 6: Final answer
   x = 1,882,144.50