Finding the Third Proportional to 142,733 and 313,709.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,733 : 313,709.50 = 313,709.50 : x
2. Step 2: Convert to fraction form
   142,733/313,709.50 = 313,709.50/x
3. Step 3: Cross multiply
   142,733x = 313,709.50 × 313,709.50
4. Step 4: Simplify right side
   142,733x = 98,413,650,390.25
5. Step 5: Solve for x
   x = 98,413,650,390.25/142,733
6. Step 6: Final answer
   x = 689,494.72