Finding the Third Proportional to 142,726.50 and 313,704

Step by Step Solution

1. Step 1: Write the proportion equation
   142,726.50 : 313,704 = 313,704 : x
2. Step 2: Convert to fraction form
   142,726.50/313,704 = 313,704/x
3. Step 3: Cross multiply
   142,726.50x = 313,704 × 313,704
4. Step 4: Simplify right side
   142,726.50x = 98,410,199,616
5. Step 5: Solve for x
   x = 98,410,199,616/142,726.50
6. Step 6: Final answer
   x = 689,501.95