Finding the Third Proportional to 10,490 and 21,835

Step by Step Solution

1. Step 1: Write the proportion equation
   10,490 : 21,835 = 21,835 : x
2. Step 2: Convert to fraction form
   10,490/21,835 = 21,835/x
3. Step 3: Cross multiply
   10,490x = 21,835 × 21,835
4. Step 4: Simplify right side
   10,490x = 476,767,225
5. Step 5: Solve for x
   x = 476,767,225/10,490
6. Step 6: Final answer
   x = 45,449.69