Finding the Third Proportional to 3,420.56 and 7,360.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,420.56 : 7,360.88 = 7,360.88 : x
2. Step 2: Convert to fraction form
   3,420.56/7,360.88 = 7,360.88/x
3. Step 3: Cross multiply
   3,420.56x = 7,360.88 × 7,360.88
4. Step 4: Simplify right side
   3,420.56x = 54,182,480.77
5. Step 5: Solve for x
   x = 54,182,480.77/3,420.56
6. Step 6: Final answer
   x = 15,840.23