Finding the Third Proportional to 2,600.86 and 3,906.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,600.86 : 3,906.98 = 3,906.98 : x
2. Step 2: Convert to fraction form
   2,600.86/3,906.98 = 3,906.98/x
3. Step 3: Cross multiply
   2,600.86x = 3,906.98 × 3,906.98
4. Step 4: Simplify right side
   2,600.86x = 15,264,526.91
5. Step 5: Solve for x
   x = 15,264,526.91/2,600.86
6. Step 6: Final answer
   x = 5,869.03