Finding the Third Proportional to 21,146.91 and 30,720.94

Step by Step Solution

1. Step 1: Write the proportion equation
   21,146.91 : 30,720.94 = 30,720.94 : x
2. Step 2: Convert to fraction form
   21,146.91/30,720.94 = 30,720.94/x
3. Step 3: Cross multiply
   21,146.91x = 30,720.94 × 30,720.94
4. Step 4: Simplify right side
   21,146.91x = 943,776,000.88
5. Step 5: Solve for x
   x = 943,776,000.88/21,146.91
6. Step 6: Final answer
   x = 44,629.51