Finding the Third Proportional to 21,859.50 and 47,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,859.50 : 47,390.50 = 47,390.50 : x
2. Step 2: Convert to fraction form
   21,859.50/47,390.50 = 47,390.50/x
3. Step 3: Cross multiply
   21,859.50x = 47,390.50 × 47,390.50
4. Step 4: Simplify right side
   21,859.50x = 2,245,859,490.25
5. Step 5: Solve for x
   x = 2,245,859,490.25/21,859.50
6. Step 6: Final answer
   x = 102,740.66