Finding the Third Proportional to 999.25 and 1,488.63

Step by Step Solution

1. Step 1: Write the proportion equation
   999.25 : 1,488.63 = 1,488.63 : x
2. Step 2: Convert to fraction form
   999.25/1,488.63 = 1,488.63/x
3. Step 3: Cross multiply
   999.25x = 1,488.63 × 1,488.63
4. Step 4: Simplify right side
   999.25x = 2,216,004.39
5. Step 5: Solve for x
   x = 2,216,004.39/999.25
6. Step 6: Final answer
   x = 2,217.67