Finding the Third Proportional to 155,542.50 and 320,898

Step by Step Solution

1. Step 1: Write the proportion equation
   155,542.50 : 320,898 = 320,898 : x
2. Step 2: Convert to fraction form
   155,542.50/320,898 = 320,898/x
3. Step 3: Cross multiply
   155,542.50x = 320,898 × 320,898
4. Step 4: Simplify right side
   155,542.50x = 102,975,526,404
5. Step 5: Solve for x
   x = 102,975,526,404/155,542.50
6. Step 6: Final answer
   x = 662,041.09