Finding the Third Proportional to 1,291.78 and 1,973.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291.78 : 1,973.53 = 1,973.53 : x
2. Step 2: Convert to fraction form
   1,291.78/1,973.53 = 1,973.53/x
3. Step 3: Cross multiply
   1,291.78x = 1,973.53 × 1,973.53
4. Step 4: Simplify right side
   1,291.78x = 3,894,825.59
5. Step 5: Solve for x
   x = 3,894,825.59/1,291.78
6. Step 6: Final answer
   x = 3,015.08