Finding the Third Proportional to 984.66 and 2,123.72

Step by Step Solution

1. Step 1: Write the proportion equation
   984.66 : 2,123.72 = 2,123.72 : x
2. Step 2: Convert to fraction form
   984.66/2,123.72 = 2,123.72/x
3. Step 3: Cross multiply
   984.66x = 2,123.72 × 2,123.72
4. Step 4: Simplify right side
   984.66x = 4,510,181.33
5. Step 5: Solve for x
   x = 4,510,181.33/984.66
6. Step 6: Final answer
   x = 4,580.46