Finding the Third Proportional to 142,933 and 210,120

Step by Step Solution

1. Step 1: Write the proportion equation
   142,933 : 210,120 = 210,120 : x
2. Step 2: Convert to fraction form
   142,933/210,120 = 210,120/x
3. Step 3: Cross multiply
   142,933x = 210,120 × 210,120
4. Step 4: Simplify right side
   142,933x = 44,150,414,400
5. Step 5: Solve for x
   x = 44,150,414,400/142,933
6. Step 6: Final answer
   x = 308,888.88