Finding the Third Proportional to 142,315.50 and 305,736

Step by Step Solution

1. Step 1: Write the proportion equation
   142,315.50 : 305,736 = 305,736 : x
2. Step 2: Convert to fraction form
   142,315.50/305,736 = 305,736/x
3. Step 3: Cross multiply
   142,315.50x = 305,736 × 305,736
4. Step 4: Simplify right side
   142,315.50x = 93,474,501,696
5. Step 5: Solve for x
   x = 93,474,501,696/142,315.50
6. Step 6: Final answer
   x = 656,811.81