Finding the Third Proportional to 690.29 and 1,051.52

Step by Step Solution

1. Step 1: Write the proportion equation
   690.29 : 1,051.52 = 1,051.52 : x
2. Step 2: Convert to fraction form
   690.29/1,051.52 = 1,051.52/x
3. Step 3: Cross multiply
   690.29x = 1,051.52 × 1,051.52
4. Step 4: Simplify right side
   690.29x = 1,105,701.54
5. Step 5: Solve for x
   x = 1,105,701.54/690.29
6. Step 6: Final answer
   x = 1,601.79