Finding the Third Proportional to 999.21 and 1,498.71

Step by Step Solution

1. Step 1: Write the proportion equation
   999.21 : 1,498.71 = 1,498.71 : x
2. Step 2: Convert to fraction form
   999.21/1,498.71 = 1,498.71/x
3. Step 3: Cross multiply
   999.21x = 1,498.71 × 1,498.71
4. Step 4: Simplify right side
   999.21x = 2,246,134.47
5. Step 5: Solve for x
   x = 2,246,134.47/999.21
6. Step 6: Final answer
   x = 2,247.91