Finding the Third Proportional to 2,299.50 and 4,990.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,299.50 : 4,990.50 = 4,990.50 : x
2. Step 2: Convert to fraction form
   2,299.50/4,990.50 = 4,990.50/x
3. Step 3: Cross multiply
   2,299.50x = 4,990.50 × 4,990.50
4. Step 4: Simplify right side
   2,299.50x = 24,905,090.25
5. Step 5: Solve for x
   x = 24,905,090.25/2,299.50
6. Step 6: Final answer
   x = 10,830.65