Finding the Third Proportional to 585,173 and 1,257,643

Step by Step Solution

1. Step 1: Write the proportion equation
   585,173 : 1,257,643 = 1,257,643 : x
2. Step 2: Convert to fraction form
   585,173/1,257,643 = 1,257,643/x
3. Step 3: Cross multiply
   585,173x = 1,257,643 × 1,257,643
4. Step 4: Simplify right side
   585,173x = 1,581,665,915,449
5. Step 5: Solve for x
   x = 1,581,665,915,449/585,173
6. Step 6: Final answer
   x = 2,702,903.10