Finding the Third Proportional to 3,947.17 and 8,526.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.17 : 8,526.83 = 8,526.83 : x
2. Step 2: Convert to fraction form
   3,947.17/8,526.83 = 8,526.83/x
3. Step 3: Cross multiply
   3,947.17x = 8,526.83 × 8,526.83
4. Step 4: Simplify right side
   3,947.17x = 72,706,864.49
5. Step 5: Solve for x
   x = 72,706,864.49/3,947.17
6. Step 6: Final answer
   x = 18,420.01