Finding the Third Proportional to 215,518 and 468,800

Step by Step Solution

1. Step 1: Write the proportion equation
   215,518 : 468,800 = 468,800 : x
2. Step 2: Convert to fraction form
   215,518/468,800 = 468,800/x
3. Step 3: Cross multiply
   215,518x = 468,800 × 468,800
4. Step 4: Simplify right side
   215,518x = 219,773,440,000
5. Step 5: Solve for x
   x = 219,773,440,000/215,518
6. Step 6: Final answer
   x = 1,019,745.17