Finding the Third Proportional to 65,854.50 and 142,239

Step by Step Solution

1. Step 1: Write the proportion equation
   65,854.50 : 142,239 = 142,239 : x
2. Step 2: Convert to fraction form
   65,854.50/142,239 = 142,239/x
3. Step 3: Cross multiply
   65,854.50x = 142,239 × 142,239
4. Step 4: Simplify right side
   65,854.50x = 20,231,933,121
5. Step 5: Solve for x
   x = 20,231,933,121/65,854.50
6. Step 6: Final answer
   x = 307,221.73