Finding the Third Proportional to 1,292.36 and 1,938.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,292.36 : 1,938.78 = 1,938.78 : x
2. Step 2: Convert to fraction form
   1,292.36/1,938.78 = 1,938.78/x
3. Step 3: Cross multiply
   1,292.36x = 1,938.78 × 1,938.78
4. Step 4: Simplify right side
   1,292.36x = 3,758,865.16
5. Step 5: Solve for x
   x = 3,758,865.16/1,292.36
6. Step 6: Final answer
   x = 2,908.52