Finding the Third Proportional to 155,931 and 336,789.38

Step by Step Solution

1. Step 1: Write the proportion equation
   155,931 : 336,789.38 = 336,789.38 : x
2. Step 2: Convert to fraction form
   155,931/336,789.38 = 336,789.38/x
3. Step 3: Cross multiply
   155,931x = 336,789.38 × 336,789.38
4. Step 4: Simplify right side
   155,931x = 113,427,083,112.89
5. Step 5: Solve for x
   x = 113,427,083,112.89/155,931
6. Step 6: Final answer
   x = 727,418.43