Finding the Third Proportional to 117,273.50 and 256,055.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,273.50 : 256,055.50 = 256,055.50 : x
2. Step 2: Convert to fraction form
   117,273.50/256,055.50 = 256,055.50/x
3. Step 3: Cross multiply
   117,273.50x = 256,055.50 × 256,055.50
4. Step 4: Simplify right side
   117,273.50x = 65,564,419,080.25
5. Step 5: Solve for x
   x = 65,564,419,080.25/117,273.50
6. Step 6: Final answer
   x = 559,072.76