Finding the Third Proportional to 142,887 and 215,626.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,887 : 215,626.50 = 215,626.50 : x
2. Step 2: Convert to fraction form
   142,887/215,626.50 = 215,626.50/x
3. Step 3: Cross multiply
   142,887x = 215,626.50 × 215,626.50
4. Step 4: Simplify right side
   142,887x = 46,494,787,502.25
5. Step 5: Solve for x
   x = 46,494,787,502.25/142,887
6. Step 6: Final answer
   x = 325,395.50