Finding the Third Proportional to 1,692.56 and 2,722.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,692.56 : 2,722.78 = 2,722.78 : x
2. Step 2: Convert to fraction form
   1,692.56/2,722.78 = 2,722.78/x
3. Step 3: Cross multiply
   1,692.56x = 2,722.78 × 2,722.78
4. Step 4: Simplify right side
   1,692.56x = 7,413,537.74
5. Step 5: Solve for x
   x = 7,413,537.74/1,692.56
6. Step 6: Final answer
   x = 4,380.07