Finding the Third Proportional to 1,364.63 and 2,115.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,364.63 : 2,115.56 = 2,115.56 : x
2. Step 2: Convert to fraction form
   1,364.63/2,115.56 = 2,115.56/x
3. Step 3: Cross multiply
   1,364.63x = 2,115.56 × 2,115.56
4. Step 4: Simplify right side
   1,364.63x = 4,475,604.69
5. Step 5: Solve for x
   x = 4,475,604.69/1,364.63
6. Step 6: Final answer
   x = 3,279.73