Finding the Third Proportional to 138,162.38 and 302,629.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,162.38 : 302,629.50 = 302,629.50 : x
2. Step 2: Convert to fraction form
   138,162.38/302,629.50 = 302,629.50/x
3. Step 3: Cross multiply
   138,162.38x = 302,629.50 × 302,629.50
4. Step 4: Simplify right side
   138,162.38x = 91,584,614,270.25
5. Step 5: Solve for x
   x = 91,584,614,270.25/138,162.38
6. Step 6: Final answer
   x = 662,876.66