Finding the Third Proportional to 142,875 and 215,608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,875 : 215,608.50 = 215,608.50 : x
2. Step 2: Convert to fraction form
   142,875/215,608.50 = 215,608.50/x
3. Step 3: Cross multiply
   142,875x = 215,608.50 × 215,608.50
4. Step 4: Simplify right side
   142,875x = 46,487,025,272.25
5. Step 5: Solve for x
   x = 46,487,025,272.25/142,875
6. Step 6: Final answer
   x = 325,368.51