Finding the Third Proportional to 155,500.50 and 326,665.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,500.50 : 326,665.50 = 326,665.50 : x
2. Step 2: Convert to fraction form
   155,500.50/326,665.50 = 326,665.50/x
3. Step 3: Cross multiply
   155,500.50x = 326,665.50 × 326,665.50
4. Step 4: Simplify right side
   155,500.50x = 106,710,348,890.25
5. Step 5: Solve for x
   x = 106,710,348,890.25/155,500.50
6. Step 6: Final answer
   x = 686,237.98