Finding the Third Proportional to 142,918.50 and 304,818

Step by Step Solution

1. Step 1: Write the proportion equation
   142,918.50 : 304,818 = 304,818 : x
2. Step 2: Convert to fraction form
   142,918.50/304,818 = 304,818/x
3. Step 3: Cross multiply
   142,918.50x = 304,818 × 304,818
4. Step 4: Simplify right side
   142,918.50x = 92,914,013,124
5. Step 5: Solve for x
   x = 92,914,013,124/142,918.50
6. Step 6: Final answer
   x = 650,118.87