Finding the Third Proportional to 142,987.50 and 304,463.25

Step by Step Solution

1. Step 1: Write the proportion equation
   142,987.50 : 304,463.25 = 304,463.25 : x
2. Step 2: Convert to fraction form
   142,987.50/304,463.25 = 304,463.25/x
3. Step 3: Cross multiply
   142,987.50x = 304,463.25 × 304,463.25
4. Step 4: Simplify right side
   142,987.50x = 92,697,870,600.56
5. Step 5: Solve for x
   x = 92,697,870,600.56/142,987.50
6. Step 6: Final answer
   x = 648,293.53