Finding the Third Proportional to 99,495 and 215,028

Step by Step Solution

1. Step 1: Write the proportion equation
   99,495 : 215,028 = 215,028 : x
2. Step 2: Convert to fraction form
   99,495/215,028 = 215,028/x
3. Step 3: Cross multiply
   99,495x = 215,028 × 215,028
4. Step 4: Simplify right side
   99,495x = 46,237,040,784
5. Step 5: Solve for x
   x = 46,237,040,784/99,495
6. Step 6: Final answer
   x = 464,717.23