Finding the Third Proportional to 2,611.50 and 3,916.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,611.50 : 3,916.50 = 3,916.50 : x
2. Step 2: Convert to fraction form
   2,611.50/3,916.50 = 3,916.50/x
3. Step 3: Cross multiply
   2,611.50x = 3,916.50 × 3,916.50
4. Step 4: Simplify right side
   2,611.50x = 15,338,972.25
5. Step 5: Solve for x
   x = 15,338,972.25/2,611.50
6. Step 6: Final answer
   x = 5,873.63