Finding the Third Proportional to 142,007.50 and 207,518.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,007.50 : 207,518.50 = 207,518.50 : x
2. Step 2: Convert to fraction form
   142,007.50/207,518.50 = 207,518.50/x
3. Step 3: Cross multiply
   142,007.50x = 207,518.50 × 207,518.50
4. Step 4: Simplify right side
   142,007.50x = 43,063,927,842.25
5. Step 5: Solve for x
   x = 43,063,927,842.25/142,007.50
6. Step 6: Final answer
   x = 303,251.08