Finding the Third Proportional to 2,190.06 and 3,486.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.06 : 3,486.50 = 3,486.50 : x
2. Step 2: Convert to fraction form
   2,190.06/3,486.50 = 3,486.50/x
3. Step 3: Cross multiply
   2,190.06x = 3,486.50 × 3,486.50
4. Step 4: Simplify right side
   2,190.06x = 12,155,682.25
5. Step 5: Solve for x
   x = 12,155,682.25/2,190.06
6. Step 6: Final answer
   x = 5,550.38