Finding the Third Proportional to 142,316 and 223,240

Step by Step Solution

1. Step 1: Write the proportion equation
   142,316 : 223,240 = 223,240 : x
2. Step 2: Convert to fraction form
   142,316/223,240 = 223,240/x
3. Step 3: Cross multiply
   142,316x = 223,240 × 223,240
4. Step 4: Simplify right side
   142,316x = 49,836,097,600
5. Step 5: Solve for x
   x = 49,836,097,600/142,316
6. Step 6: Final answer
   x = 350,179.16