Finding the Third Proportional to 3,415.50 and 5,362.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,415.50 : 5,362.88 = 5,362.88 : x
2. Step 2: Convert to fraction form
   3,415.50/5,362.88 = 5,362.88/x
3. Step 3: Cross multiply
   3,415.50x = 5,362.88 × 5,362.88
4. Step 4: Simplify right side
   3,415.50x = 28,760,428.27
5. Step 5: Solve for x
   x = 28,760,428.27/3,415.50
6. Step 6: Final answer
   x = 8,420.56