Finding the Third Proportional to 142,172 and 329,132

Step by Step Solution

1. Step 1: Write the proportion equation
   142,172 : 329,132 = 329,132 : x
2. Step 2: Convert to fraction form
   142,172/329,132 = 329,132/x
3. Step 3: Cross multiply
   142,172x = 329,132 × 329,132
4. Step 4: Simplify right side
   142,172x = 108,327,873,424
5. Step 5: Solve for x
   x = 108,327,873,424/142,172
6. Step 6: Final answer
   x = 761,949.42