Finding the Third Proportional to 259,284 and 388,932

Step by Step Solution

1. Step 1: Write the proportion equation
   259,284 : 388,932 = 388,932 : x
2. Step 2: Convert to fraction form
   259,284/388,932 = 388,932/x
3. Step 3: Cross multiply
   259,284x = 388,932 × 388,932
4. Step 4: Simplify right side
   259,284x = 151,268,100,624
5. Step 5: Solve for x
   x = 151,268,100,624/259,284
6. Step 6: Final answer
   x = 583,407.00