Finding the Third Proportional to 120,818 and 250,132

Step by Step Solution

1. Step 1: Write the proportion equation
   120,818 : 250,132 = 250,132 : x
2. Step 2: Convert to fraction form
   120,818/250,132 = 250,132/x
3. Step 3: Cross multiply
   120,818x = 250,132 × 250,132
4. Step 4: Simplify right side
   120,818x = 62,566,017,424
5. Step 5: Solve for x
   x = 62,566,017,424/120,818
6. Step 6: Final answer
   x = 517,853.44