Finding the Third Proportional to 21,513.38 and 30,985.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,513.38 : 30,985.31 = 30,985.31 : x
2. Step 2: Convert to fraction form
   21,513.38/30,985.31 = 30,985.31/x
3. Step 3: Cross multiply
   21,513.38x = 30,985.31 × 30,985.31
4. Step 4: Simplify right side
   21,513.38x = 960,089,590.72
5. Step 5: Solve for x
   x = 960,089,590.72/21,513.38
6. Step 6: Final answer
   x = 44,627.57