Finding the Third Proportional to 142,048.69 and 315,627.89

Step by Step Solution

1. Step 1: Write the proportion equation
   142,048.69 : 315,627.89 = 315,627.89 : x
2. Step 2: Convert to fraction form
   142,048.69/315,627.89 = 315,627.89/x
3. Step 3: Cross multiply
   142,048.69x = 315,627.89 × 315,627.89
4. Step 4: Simplify right side
   142,048.69x = 99,620,965,340.39
5. Step 5: Solve for x
   x = 99,620,965,340.39/142,048.69
6. Step 6: Final answer
   x = 701,315.63