Finding the Third Proportional to 1,368.47 and 2,116.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.47 : 2,116.59 = 2,116.59 : x
2. Step 2: Convert to fraction form
   1,368.47/2,116.59 = 2,116.59/x
3. Step 3: Cross multiply
   1,368.47x = 2,116.59 × 2,116.59
4. Step 4: Simplify right side
   1,368.47x = 4,479,969.10
5. Step 5: Solve for x
   x = 4,479,969.10/1,368.47
6. Step 6: Final answer
   x = 3,273.71