Finding the Third Proportional to 9,900 and 21,335

Step by Step Solution

1. Step 1: Write the proportion equation
   9,900 : 21,335 = 21,335 : x
2. Step 2: Convert to fraction form
   9,900/21,335 = 21,335/x
3. Step 3: Cross multiply
   9,900x = 21,335 × 21,335
4. Step 4: Simplify right side
   9,900x = 455,182,225
5. Step 5: Solve for x
   x = 455,182,225/9,900
6. Step 6: Final answer
   x = 45,978.00