Finding the Third Proportional to 99,635 and 215,868

Step by Step Solution

1. Step 1: Write the proportion equation
   99,635 : 215,868 = 215,868 : x
2. Step 2: Convert to fraction form
   99,635/215,868 = 215,868/x
3. Step 3: Cross multiply
   99,635x = 215,868 × 215,868
4. Step 4: Simplify right side
   99,635x = 46,598,993,424
5. Step 5: Solve for x
   x = 46,598,993,424/99,635
6. Step 6: Final answer
   x = 467,697.03