Finding the Third Proportional to 432 and 1,086.75

Step by Step Solution

1. Step 1: Write the proportion equation
   432 : 1,086.75 = 1,086.75 : x
2. Step 2: Convert to fraction form
   432/1,086.75 = 1,086.75/x
3. Step 3: Cross multiply
   432x = 1,086.75 × 1,086.75
4. Step 4: Simplify right side
   432x = 1,181,025.56
5. Step 5: Solve for x
   x = 1,181,025.56/432
6. Step 6: Final answer
   x = 2,733.86