Finding the Third Proportional to 1,063.50 and 1,691.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.50 : 1,691.25 = 1,691.25 : x
2. Step 2: Convert to fraction form
   1,063.50/1,691.25 = 1,691.25/x
3. Step 3: Cross multiply
   1,063.50x = 1,691.25 × 1,691.25
4. Step 4: Simplify right side
   1,063.50x = 2,860,326.56
5. Step 5: Solve for x
   x = 2,860,326.56/1,063.50
6. Step 6: Final answer
   x = 2,689.54