Finding the Third Proportional to 21,478.31 and 47,191.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,478.31 : 47,191.31 = 47,191.31 : x
2. Step 2: Convert to fraction form
   21,478.31/47,191.31 = 47,191.31/x
3. Step 3: Cross multiply
   21,478.31x = 47,191.31 × 47,191.31
4. Step 4: Simplify right side
   21,478.31x = 2,227,019,975.47
5. Step 5: Solve for x
   x = 2,227,019,975.47/21,478.31
6. Step 6: Final answer
   x = 103,686.92