Finding the Third Proportional to 230,256 and 355,225.50

Step by Step Solution

1. Step 1: Write the proportion equation
   230,256 : 355,225.50 = 355,225.50 : x
2. Step 2: Convert to fraction form
   230,256/355,225.50 = 355,225.50/x
3. Step 3: Cross multiply
   230,256x = 355,225.50 × 355,225.50
4. Step 4: Simplify right side
   230,256x = 126,185,155,850.25
5. Step 5: Solve for x
   x = 126,185,155,850.25/230,256
6. Step 6: Final answer
   x = 548,021.14