Finding the Third Proportional to 3,652.64 and 7,988.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,652.64 : 7,988.72 = 7,988.72 : x
2. Step 2: Convert to fraction form
   3,652.64/7,988.72 = 7,988.72/x
3. Step 3: Cross multiply
   3,652.64x = 7,988.72 × 7,988.72
4. Step 4: Simplify right side
   3,652.64x = 63,819,627.27
5. Step 5: Solve for x
   x = 63,819,627.27/3,652.64
6. Step 6: Final answer
   x = 17,472.19