Finding the Third Proportional to 1,204.31 and 1,618.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,204.31 : 1,618.88 = 1,618.88 : x
2. Step 2: Convert to fraction form
   1,204.31/1,618.88 = 1,618.88/x
3. Step 3: Cross multiply
   1,204.31x = 1,618.88 × 1,618.88
4. Step 4: Simplify right side
   1,204.31x = 2,620,756.27
5. Step 5: Solve for x
   x = 2,620,756.27/1,204.31
6. Step 6: Final answer
   x = 2,176.14