Finding the Third Proportional to 259,922 and 558,522

Step by Step Solution

1. Step 1: Write the proportion equation
   259,922 : 558,522 = 558,522 : x
2. Step 2: Convert to fraction form
   259,922/558,522 = 558,522/x
3. Step 3: Cross multiply
   259,922x = 558,522 × 558,522
4. Step 4: Simplify right side
   259,922x = 311,946,824,484
5. Step 5: Solve for x
   x = 311,946,824,484/259,922
6. Step 6: Final answer
   x = 1,200,155.53