Finding the Third Proportional to 155,898 and 242,959.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,898 : 242,959.50 = 242,959.50 : x
2. Step 2: Convert to fraction form
   155,898/242,959.50 = 242,959.50/x
3. Step 3: Cross multiply
   155,898x = 242,959.50 × 242,959.50
4. Step 4: Simplify right side
   155,898x = 59,029,318,640.25
5. Step 5: Solve for x
   x = 59,029,318,640.25/155,898
6. Step 6: Final answer
   x = 378,640.64