Finding the Third Proportional to 1,372.88 and 2,123.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.88 : 2,123.06 = 2,123.06 : x
2. Step 2: Convert to fraction form
   1,372.88/2,123.06 = 2,123.06/x
3. Step 3: Cross multiply
   1,372.88x = 2,123.06 × 2,123.06
4. Step 4: Simplify right side
   1,372.88x = 4,507,394.38
5. Step 5: Solve for x
   x = 4,507,394.38/1,372.88
6. Step 6: Final answer
   x = 3,283.18