Finding the Third Proportional to 21,012.75 and 28,157.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,012.75 : 28,157.63 = 28,157.63 : x
2. Step 2: Convert to fraction form
   21,012.75/28,157.63 = 28,157.63/x
3. Step 3: Cross multiply
   21,012.75x = 28,157.63 × 28,157.63
4. Step 4: Simplify right side
   21,012.75x = 792,851,845.64
5. Step 5: Solve for x
   x = 792,851,845.64/21,012.75
6. Step 6: Final answer
   x = 37,731.94