Finding the Third Proportional to 120,828 and 250,152

Step by Step Solution

1. Step 1: Write the proportion equation
   120,828 : 250,152 = 250,152 : x
2. Step 2: Convert to fraction form
   120,828/250,152 = 250,152/x
3. Step 3: Cross multiply
   120,828x = 250,152 × 250,152
4. Step 4: Simplify right side
   120,828x = 62,576,023,104
5. Step 5: Solve for x
   x = 62,576,023,104/120,828
6. Step 6: Final answer
   x = 517,893.39