Finding the Third Proportional to 142,215.75 and 304,672.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,215.75 : 304,672.50 = 304,672.50 : x
2. Step 2: Convert to fraction form
   142,215.75/304,672.50 = 304,672.50/x
3. Step 3: Cross multiply
   142,215.75x = 304,672.50 × 304,672.50
4. Step 4: Simplify right side
   142,215.75x = 92,825,332,256.25
5. Step 5: Solve for x
   x = 92,825,332,256.25/142,215.75
6. Step 6: Final answer
   x = 652,707.82