Finding the Third Proportional to 229,780 and 486,056

Step by Step Solution

1. Step 1: Write the proportion equation
   229,780 : 486,056 = 486,056 : x
2. Step 2: Convert to fraction form
   229,780/486,056 = 486,056/x
3. Step 3: Cross multiply
   229,780x = 486,056 × 486,056
4. Step 4: Simplify right side
   229,780x = 236,250,435,136
5. Step 5: Solve for x
   x = 236,250,435,136/229,780
6. Step 6: Final answer
   x = 1,028,159.26