Finding the Third Proportional to 9,961.50 and 21,459

Step by Step Solution

1. Step 1: Write the proportion equation
   9,961.50 : 21,459 = 21,459 : x
2. Step 2: Convert to fraction form
   9,961.50/21,459 = 21,459/x
3. Step 3: Cross multiply
   9,961.50x = 21,459 × 21,459
4. Step 4: Simplify right side
   9,961.50x = 460,488,681
5. Step 5: Solve for x
   x = 460,488,681/9,961.50
6. Step 6: Final answer
   x = 46,226.84