Finding the Third Proportional to 1,139.86 and 1,629.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.86 : 1,629.98 = 1,629.98 : x
2. Step 2: Convert to fraction form
   1,139.86/1,629.98 = 1,629.98/x
3. Step 3: Cross multiply
   1,139.86x = 1,629.98 × 1,629.98
4. Step 4: Simplify right side
   1,139.86x = 2,656,849.06
5. Step 5: Solve for x
   x = 2,656,849.06/1,139.86
6. Step 6: Final answer
   x = 2,330.86