Finding the Third Proportional to 1,312.78 and 1,969.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312.78 : 1,969.27 = 1,969.27 : x
2. Step 2: Convert to fraction form
   1,312.78/1,969.27 = 1,969.27/x
3. Step 3: Cross multiply
   1,312.78x = 1,969.27 × 1,969.27
4. Step 4: Simplify right side
   1,312.78x = 3,878,007.10
5. Step 5: Solve for x
   x = 3,878,007.10/1,312.78
6. Step 6: Final answer
   x = 2,954.04