Finding the Third Proportional to 9,746.50 and 21,139.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,746.50 : 21,139.75 = 21,139.75 : x
2. Step 2: Convert to fraction form
   9,746.50/21,139.75 = 21,139.75/x
3. Step 3: Cross multiply
   9,746.50x = 21,139.75 × 21,139.75
4. Step 4: Simplify right side
   9,746.50x = 446,889,030.06
5. Step 5: Solve for x
   x = 446,889,030.06/9,746.50
6. Step 6: Final answer
   x = 45,851.23