Finding the Third Proportional to 199,305 and 302,647.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,305 : 302,647.50 = 302,647.50 : x
2. Step 2: Convert to fraction form
   199,305/302,647.50 = 302,647.50/x
3. Step 3: Cross multiply
   199,305x = 302,647.50 × 302,647.50
4. Step 4: Simplify right side
   199,305x = 91,595,509,256.25
5. Step 5: Solve for x
   x = 91,595,509,256.25/199,305
6. Step 6: Final answer
   x = 459,574.57