Finding the Third Proportional to 9,898.45 and 20,613.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,898.45 : 20,613.23 = 20,613.23 : x
2. Step 2: Convert to fraction form
   9,898.45/20,613.23 = 20,613.23/x
3. Step 3: Cross multiply
   9,898.45x = 20,613.23 × 20,613.23
4. Step 4: Simplify right side
   9,898.45x = 424,905,431.40
5. Step 5: Solve for x
   x = 424,905,431.40/9,898.45
6. Step 6: Final answer
   x = 42,926.45