Finding the Third Proportional to 2,298.38 and 4,985.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.38 : 4,985.72 = 4,985.72 : x
2. Step 2: Convert to fraction form
   2,298.38/4,985.72 = 4,985.72/x
3. Step 3: Cross multiply
   2,298.38x = 4,985.72 × 4,985.72
4. Step 4: Simplify right side
   2,298.38x = 24,857,391.45
5. Step 5: Solve for x
   x = 24,857,391.45/2,298.38
6. Step 6: Final answer
   x = 10,815.20