Finding the Third Proportional to 199,491.25 and 426,630.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,491.25 : 426,630.50 = 426,630.50 : x
2. Step 2: Convert to fraction form
   199,491.25/426,630.50 = 426,630.50/x
3. Step 3: Cross multiply
   199,491.25x = 426,630.50 × 426,630.50
4. Step 4: Simplify right side
   199,491.25x = 182,013,583,530.25
5. Step 5: Solve for x
   x = 182,013,583,530.25/199,491.25
6. Step 6: Final answer
   x = 912,388.81