Finding the Third Proportional to 118,198.50 and 256,089

Step by Step Solution

1. Step 1: Write the proportion equation
   118,198.50 : 256,089 = 256,089 : x
2. Step 2: Convert to fraction form
   118,198.50/256,089 = 256,089/x
3. Step 3: Cross multiply
   118,198.50x = 256,089 × 256,089
4. Step 4: Simplify right side
   118,198.50x = 65,581,575,921
5. Step 5: Solve for x
   x = 65,581,575,921/118,198.50
6. Step 6: Final answer
   x = 554,842.71