Finding the Third Proportional to 9,499.78 and 21,049.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,499.78 : 21,049.88 = 21,049.88 : x
2. Step 2: Convert to fraction form
   9,499.78/21,049.88 = 21,049.88/x
3. Step 3: Cross multiply
   9,499.78x = 21,049.88 × 21,049.88
4. Step 4: Simplify right side
   9,499.78x = 443,097,237.52
5. Step 5: Solve for x
   x = 443,097,237.52/9,499.78
6. Step 6: Final answer
   x = 46,642.89