Finding the Third Proportional to 259,893 and 388,782

Step by Step Solution

1. Step 1: Write the proportion equation
   259,893 : 388,782 = 388,782 : x
2. Step 2: Convert to fraction form
   259,893/388,782 = 388,782/x
3. Step 3: Cross multiply
   259,893x = 388,782 × 388,782
4. Step 4: Simplify right side
   259,893x = 151,151,443,524
5. Step 5: Solve for x
   x = 151,151,443,524/259,893
6. Step 6: Final answer
   x = 581,591.05