Finding the Third Proportional to 21,211.50 and 45,915

Step by Step Solution

1. Step 1: Write the proportion equation
   21,211.50 : 45,915 = 45,915 : x
2. Step 2: Convert to fraction form
   21,211.50/45,915 = 45,915/x
3. Step 3: Cross multiply
   21,211.50x = 45,915 × 45,915
4. Step 4: Simplify right side
   21,211.50x = 2,108,187,225
5. Step 5: Solve for x
   x = 2,108,187,225/21,211.50
6. Step 6: Final answer
   x = 99,388.88