Finding the Third Proportional to 21,990 and 48,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,990 : 48,012.50 = 48,012.50 : x
2. Step 2: Convert to fraction form
   21,990/48,012.50 = 48,012.50/x
3. Step 3: Cross multiply
   21,990x = 48,012.50 × 48,012.50
4. Step 4: Simplify right side
   21,990x = 2,305,200,156.25
5. Step 5: Solve for x
   x = 2,305,200,156.25/21,990
6. Step 6: Final answer
   x = 104,829.48