Finding the Third Proportional to 10,243.55 and 20,862.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,243.55 : 20,862.98 = 20,862.98 : x
2. Step 2: Convert to fraction form
   10,243.55/20,862.98 = 20,862.98/x
3. Step 3: Cross multiply
   10,243.55x = 20,862.98 × 20,862.98
4. Step 4: Simplify right side
   10,243.55x = 435,264,117.03
5. Step 5: Solve for x
   x = 435,264,117.03/10,243.55
6. Step 6: Final answer
   x = 42,491.54