Finding the Third Proportional to 99,018 and 213,818.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,018 : 213,818.50 = 213,818.50 : x
2. Step 2: Convert to fraction form
   99,018/213,818.50 = 213,818.50/x
3. Step 3: Cross multiply
   99,018x = 213,818.50 × 213,818.50
4. Step 4: Simplify right side
   99,018x = 45,718,350,942.25
5. Step 5: Solve for x
   x = 45,718,350,942.25/99,018
6. Step 6: Final answer
   x = 461,717.58