Finding the Third Proportional to 142,203 and 304,090

Step by Step Solution

1. Step 1: Write the proportion equation
   142,203 : 304,090 = 304,090 : x
2. Step 2: Convert to fraction form
   142,203/304,090 = 304,090/x
3. Step 3: Cross multiply
   142,203x = 304,090 × 304,090
4. Step 4: Simplify right side
   142,203x = 92,470,728,100
5. Step 5: Solve for x
   x = 92,470,728,100/142,203
6. Step 6: Final answer
   x = 650,272.70