Finding the Third Proportional to 1,209.38 and 1,816.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209.38 : 1,816.88 = 1,816.88 : x
2. Step 2: Convert to fraction form
   1,209.38/1,816.88 = 1,816.88/x
3. Step 3: Cross multiply
   1,209.38x = 1,816.88 × 1,816.88
4. Step 4: Simplify right side
   1,209.38x = 3,301,034.77
5. Step 5: Solve for x
   x = 3,301,034.77/1,209.38
6. Step 6: Final answer
   x = 2,729.54