Finding the Third Proportional to 510.50 and 1,045

Step by Step Solution

1. Step 1: Write the proportion equation
   510.50 : 1,045 = 1,045 : x
2. Step 2: Convert to fraction form
   510.50/1,045 = 1,045/x
3. Step 3: Cross multiply
   510.50x = 1,045 × 1,045
4. Step 4: Simplify right side
   510.50x = 1,092,025
5. Step 5: Solve for x
   x = 1,092,025/510.50
6. Step 6: Final answer
   x = 2,139.13