Finding the Third Proportional to 21,911.50 and 35,599.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,911.50 : 35,599.50 = 35,599.50 : x
2. Step 2: Convert to fraction form
   21,911.50/35,599.50 = 35,599.50/x
3. Step 3: Cross multiply
   21,911.50x = 35,599.50 × 35,599.50
4. Step 4: Simplify right side
   21,911.50x = 1,267,324,400.25
5. Step 5: Solve for x
   x = 1,267,324,400.25/21,911.50
6. Step 6: Final answer
   x = 57,838.32