Finding the Third Proportional to 10,231.31 and 21,191.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,231.31 : 21,191.63 = 21,191.63 : x
2. Step 2: Convert to fraction form
   10,231.31/21,191.63 = 21,191.63/x
3. Step 3: Cross multiply
   10,231.31x = 21,191.63 × 21,191.63
4. Step 4: Simplify right side
   10,231.31x = 449,084,970.14
5. Step 5: Solve for x
   x = 449,084,970.14/10,231.31
6. Step 6: Final answer
   x = 43,893.19