Finding the Third Proportional to 1,137.38 and 1,681.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.38 : 1,681.88 = 1,681.88 : x
2. Step 2: Convert to fraction form
   1,137.38/1,681.88 = 1,681.88/x
3. Step 3: Cross multiply
   1,137.38x = 1,681.88 × 1,681.88
4. Step 4: Simplify right side
   1,137.38x = 2,828,703.52
5. Step 5: Solve for x
   x = 2,828,703.52/1,137.38
6. Step 6: Final answer
   x = 2,487.05