Finding the Third Proportional to 165,315.38 and 337,635

Step by Step Solution

1. Step 1: Write the proportion equation
   165,315.38 : 337,635 = 337,635 : x
2. Step 2: Convert to fraction form
   165,315.38/337,635 = 337,635/x
3. Step 3: Cross multiply
   165,315.38x = 337,635 × 337,635
4. Step 4: Simplify right side
   165,315.38x = 113,997,393,225
5. Step 5: Solve for x
   x = 113,997,393,225/165,315.38
6. Step 6: Final answer
   x = 689,575.26