Finding the Third Proportional to 142,953 and 210,150

Step by Step Solution

1. Step 1: Write the proportion equation
   142,953 : 210,150 = 210,150 : x
2. Step 2: Convert to fraction form
   142,953/210,150 = 210,150/x
3. Step 3: Cross multiply
   142,953x = 210,150 × 210,150
4. Step 4: Simplify right side
   142,953x = 44,163,022,500
5. Step 5: Solve for x
   x = 44,163,022,500/142,953
6. Step 6: Final answer
   x = 308,933.86