Finding the Third Proportional to 9,679.18 and 20,930.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,679.18 : 20,930.27 = 20,930.27 : x
2. Step 2: Convert to fraction form
   9,679.18/20,930.27 = 20,930.27/x
3. Step 3: Cross multiply
   9,679.18x = 20,930.27 × 20,930.27
4. Step 4: Simplify right side
   9,679.18x = 438,076,346.17
5. Step 5: Solve for x
   x = 438,076,346.17/9,679.18
6. Step 6: Final answer
   x = 45,259.64