Finding the Third Proportional to 15,779.81 and 17,488.41

Step by Step Solution

1. Step 1: Write the proportion equation
   15,779.81 : 17,488.41 = 17,488.41 : x
2. Step 2: Convert to fraction form
   15,779.81/17,488.41 = 17,488.41/x
3. Step 3: Cross multiply
   15,779.81x = 17,488.41 × 17,488.41
4. Step 4: Simplify right side
   15,779.81x = 305,844,353.17
5. Step 5: Solve for x
   x = 305,844,353.17/15,779.81
6. Step 6: Final answer
   x = 19,382.00