Finding the Third Proportional to 154,510.50 and 198,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,510.50 : 198,109.50 = 198,109.50 : x
2. Step 2: Convert to fraction form
   154,510.50/198,109.50 = 198,109.50/x
3. Step 3: Cross multiply
   154,510.50x = 198,109.50 × 198,109.50
4. Step 4: Simplify right side
   154,510.50x = 39,247,373,990.25
5. Step 5: Solve for x
   x = 39,247,373,990.25/154,510.50
6. Step 6: Final answer
   x = 254,011.05