Finding the Third Proportional to 99,011.81 and 212,950.69

Step by Step Solution

1. Step 1: Write the proportion equation
   99,011.81 : 212,950.69 = 212,950.69 : x
2. Step 2: Convert to fraction form
   99,011.81/212,950.69 = 212,950.69/x
3. Step 3: Cross multiply
   99,011.81x = 212,950.69 × 212,950.69
4. Step 4: Simplify right side
   99,011.81x = 45,347,995,306.72
5. Step 5: Solve for x
   x = 45,347,995,306.72/99,011.81
6. Step 6: Final answer
   x = 458,005.91