Finding the Third Proportional to 1,845.28 and 3,639.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,845.28 : 3,639.30 = 3,639.30 : x
2. Step 2: Convert to fraction form
   1,845.28/3,639.30 = 3,639.30/x
3. Step 3: Cross multiply
   1,845.28x = 3,639.30 × 3,639.30
4. Step 4: Simplify right side
   1,845.28x = 13,244,538.61
5. Step 5: Solve for x
   x = 13,244,538.61/1,845.28
6. Step 6: Final answer
   x = 7,177.52