Finding the Third Proportional to 173,071.69 and 261,916.03

Step by Step Solution

1. Step 1: Write the proportion equation
   173,071.69 : 261,916.03 = 261,916.03 : x
2. Step 2: Convert to fraction form
   173,071.69/261,916.03 = 261,916.03/x
3. Step 3: Cross multiply
   173,071.69x = 261,916.03 × 261,916.03
4. Step 4: Simplify right side
   173,071.69x = 68,600,007,425.75
5. Step 5: Solve for x
   x = 68,600,007,425.75/173,071.69
6. Step 6: Final answer
   x = 396,367.59