Finding the Third Proportional to 754.31 and 1,131.89

Step by Step Solution

1. Step 1: Write the proportion equation
   754.31 : 1,131.89 = 1,131.89 : x
2. Step 2: Convert to fraction form
   754.31/1,131.89 = 1,131.89/x
3. Step 3: Cross multiply
   754.31x = 1,131.89 × 1,131.89
4. Step 4: Simplify right side
   754.31x = 1,281,176.39
5. Step 5: Solve for x
   x = 1,281,176.39/754.31
6. Step 6: Final answer
   x = 1,698.47