Finding the Third Proportional to 21,477.25 and 43,558.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,477.25 : 43,558.50 = 43,558.50 : x
2. Step 2: Convert to fraction form
   21,477.25/43,558.50 = 43,558.50/x
3. Step 3: Cross multiply
   21,477.25x = 43,558.50 × 43,558.50
4. Step 4: Simplify right side
   21,477.25x = 1,897,342,922.25
5. Step 5: Solve for x
   x = 1,897,342,922.25/21,477.25
6. Step 6: Final answer
   x = 88,341.99