Finding the Third Proportional to 21,456 and 46,486.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,456 : 46,486.50 = 46,486.50 : x
2. Step 2: Convert to fraction form
   21,456/46,486.50 = 46,486.50/x
3. Step 3: Cross multiply
   21,456x = 46,486.50 × 46,486.50
4. Step 4: Simplify right side
   21,456x = 2,160,994,682.25
5. Step 5: Solve for x
   x = 2,160,994,682.25/21,456
6. Step 6: Final answer
   x = 100,717.50