Finding the Third Proportional to 142,472 and 335,212

Step by Step Solution

1. Step 1: Write the proportion equation
   142,472 : 335,212 = 335,212 : x
2. Step 2: Convert to fraction form
   142,472/335,212 = 335,212/x
3. Step 3: Cross multiply
   142,472x = 335,212 × 335,212
4. Step 4: Simplify right side
   142,472x = 112,367,084,944
5. Step 5: Solve for x
   x = 112,367,084,944/142,472
6. Step 6: Final answer
   x = 788,695.92