Finding the Third Proportional to 630 and 1,381.69

Step by Step Solution

1. Step 1: Write the proportion equation
   630 : 1,381.69 = 1,381.69 : x
2. Step 2: Convert to fraction form
   630/1,381.69 = 1,381.69/x
3. Step 3: Cross multiply
   630x = 1,381.69 × 1,381.69
4. Step 4: Simplify right side
   630x = 1,909,060.35
5. Step 5: Solve for x
   x = 1,909,060.35/630
6. Step 6: Final answer
   x = 3,030.25