Finding the Third Proportional to 1,915.50 and 3,513.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.50 : 3,513.75 = 3,513.75 : x
2. Step 2: Convert to fraction form
   1,915.50/3,513.75 = 3,513.75/x
3. Step 3: Cross multiply
   1,915.50x = 3,513.75 × 3,513.75
4. Step 4: Simplify right side
   1,915.50x = 12,346,439.06
5. Step 5: Solve for x
   x = 12,346,439.06/1,915.50
6. Step 6: Final answer
   x = 6,445.54