Finding the Third Proportional to 9,699 and 21,403.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,699 : 21,403.50 = 21,403.50 : x
2. Step 2: Convert to fraction form
   9,699/21,403.50 = 21,403.50/x
3. Step 3: Cross multiply
   9,699x = 21,403.50 × 21,403.50
4. Step 4: Simplify right side
   9,699x = 458,109,812.25
5. Step 5: Solve for x
   x = 458,109,812.25/9,699
6. Step 6: Final answer
   x = 47,232.69