Finding the Third Proportional to 99,414 and 213,552

Step by Step Solution

1. Step 1: Write the proportion equation
   99,414 : 213,552 = 213,552 : x
2. Step 2: Convert to fraction form
   99,414/213,552 = 213,552/x
3. Step 3: Cross multiply
   99,414x = 213,552 × 213,552
4. Step 4: Simplify right side
   99,414x = 45,604,456,704
5. Step 5: Solve for x
   x = 45,604,456,704/99,414
6. Step 6: Final answer
   x = 458,732.74