Finding the Third Proportional to 155,445 and 206,329.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,445 : 206,329.50 = 206,329.50 : x
2. Step 2: Convert to fraction form
   155,445/206,329.50 = 206,329.50/x
3. Step 3: Cross multiply
   155,445x = 206,329.50 × 206,329.50
4. Step 4: Simplify right side
   155,445x = 42,571,862,570.25
5. Step 5: Solve for x
   x = 42,571,862,570.25/155,445
6. Step 6: Final answer
   x = 273,870.90