Finding the Third Proportional to 142,870.50 and 305,424

Step by Step Solution

1. Step 1: Write the proportion equation
   142,870.50 : 305,424 = 305,424 : x
2. Step 2: Convert to fraction form
   142,870.50/305,424 = 305,424/x
3. Step 3: Cross multiply
   142,870.50x = 305,424 × 305,424
4. Step 4: Simplify right side
   142,870.50x = 93,283,819,776
5. Step 5: Solve for x
   x = 93,283,819,776/142,870.50
6. Step 6: Final answer
   x = 652,925.69