Finding the Third Proportional to 1,115.81 and 1,702.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,115.81 : 1,702.69 = 1,702.69 : x
2. Step 2: Convert to fraction form
   1,115.81/1,702.69 = 1,702.69/x
3. Step 3: Cross multiply
   1,115.81x = 1,702.69 × 1,702.69
4. Step 4: Simplify right side
   1,115.81x = 2,899,144.72
5. Step 5: Solve for x
   x = 2,899,144.72/1,115.81
6. Step 6: Final answer
   x = 2,598.24