Finding the Third Proportional to 1,603.50 and 3,501

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.50 : 3,501 = 3,501 : x
2. Step 2: Convert to fraction form
   1,603.50/3,501 = 3,501/x
3. Step 3: Cross multiply
   1,603.50x = 3,501 × 3,501
4. Step 4: Simplify right side
   1,603.50x = 12,257,001
5. Step 5: Solve for x
   x = 12,257,001/1,603.50
6. Step 6: Final answer
   x = 7,643.90