Finding the Third Proportional to 2,299.88 and 3,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,299.88 : 3,439.50 = 3,439.50 : x
2. Step 2: Convert to fraction form
   2,299.88/3,439.50 = 3,439.50/x
3. Step 3: Cross multiply
   2,299.88x = 3,439.50 × 3,439.50
4. Step 4: Simplify right side
   2,299.88x = 11,830,160.25
5. Step 5: Solve for x
   x = 11,830,160.25/2,299.88
6. Step 6: Final answer
   x = 5,143.83