Finding the Third Proportional to 2,554.45 and 3,905.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,554.45 : 3,905.86 = 3,905.86 : x
2. Step 2: Convert to fraction form
   2,554.45/3,905.86 = 3,905.86/x
3. Step 3: Cross multiply
   2,554.45x = 3,905.86 × 3,905.86
4. Step 4: Simplify right side
   2,554.45x = 15,255,737.46
5. Step 5: Solve for x
   x = 15,255,737.46/2,554.45
6. Step 6: Final answer
   x = 5,972.21