Finding the Third Proportional to 138,498.75 and 298,182.38

Step by Step Solution

1. Step 1: Write the proportion equation
   138,498.75 : 298,182.38 = 298,182.38 : x
2. Step 2: Convert to fraction form
   138,498.75/298,182.38 = 298,182.38/x
3. Step 3: Cross multiply
   138,498.75x = 298,182.38 × 298,182.38
4. Step 4: Simplify right side
   138,498.75x = 88,912,728,760.64
5. Step 5: Solve for x
   x = 88,912,728,760.64/138,498.75
6. Step 6: Final answer
   x = 641,974.95