Finding the Third Proportional to 155,715 and 243,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,715 : 243,949.50 = 243,949.50 : x
2. Step 2: Convert to fraction form
   155,715/243,949.50 = 243,949.50/x
3. Step 3: Cross multiply
   155,715x = 243,949.50 × 243,949.50
4. Step 4: Simplify right side
   155,715x = 59,511,358,550.25
5. Step 5: Solve for x
   x = 59,511,358,550.25/155,715
6. Step 6: Final answer
   x = 382,181.28