Finding the Third Proportional to 21,557 and 45,715

Step by Step Solution

1. Step 1: Write the proportion equation
   21,557 : 45,715 = 45,715 : x
2. Step 2: Convert to fraction form
   21,557/45,715 = 45,715/x
3. Step 3: Cross multiply
   21,557x = 45,715 × 45,715
4. Step 4: Simplify right side
   21,557x = 2,089,861,225
5. Step 5: Solve for x
   x = 2,089,861,225/21,557
6. Step 6: Final answer
   x = 96,945.83