Finding the Third Proportional to 9,930.50 and 20,677.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,930.50 : 20,677.50 = 20,677.50 : x
2. Step 2: Convert to fraction form
   9,930.50/20,677.50 = 20,677.50/x
3. Step 3: Cross multiply
   9,930.50x = 20,677.50 × 20,677.50
4. Step 4: Simplify right side
   9,930.50x = 427,559,006.25
5. Step 5: Solve for x
   x = 427,559,006.25/9,930.50
6. Step 6: Final answer
   x = 43,055.13