Finding the Third Proportional to 2,199.88 and 4,809.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199.88 : 4,809.88 = 4,809.88 : x
2. Step 2: Convert to fraction form
   2,199.88/4,809.88 = 4,809.88/x
3. Step 3: Cross multiply
   2,199.88x = 4,809.88 × 4,809.88
4. Step 4: Simplify right side
   2,199.88x = 23,134,897.52
5. Step 5: Solve for x
   x = 23,134,897.52/2,199.88
6. Step 6: Final answer
   x = 10,516.46