Finding the Third Proportional to 142,188 and 329,172

Step by Step Solution

1. Step 1: Write the proportion equation
   142,188 : 329,172 = 329,172 : x
2. Step 2: Convert to fraction form
   142,188/329,172 = 329,172/x
3. Step 3: Cross multiply
   142,188x = 329,172 × 329,172
4. Step 4: Simplify right side
   142,188x = 108,354,205,584
5. Step 5: Solve for x
   x = 108,354,205,584/142,188
6. Step 6: Final answer
   x = 762,048.88