Finding the Third Proportional to 142,924.50 and 210,105

Step by Step Solution

1. Step 1: Write the proportion equation
   142,924.50 : 210,105 = 210,105 : x
2. Step 2: Convert to fraction form
   142,924.50/210,105 = 210,105/x
3. Step 3: Cross multiply
   142,924.50x = 210,105 × 210,105
4. Step 4: Simplify right side
   142,924.50x = 44,144,111,025
5. Step 5: Solve for x
   x = 44,144,111,025/142,924.50
6. Step 6: Final answer
   x = 308,863.15