Finding the Third Proportional to 21,570 and 45,711

Step by Step Solution

1. Step 1: Write the proportion equation
   21,570 : 45,711 = 45,711 : x
2. Step 2: Convert to fraction form
   21,570/45,711 = 45,711/x
3. Step 3: Cross multiply
   21,570x = 45,711 × 45,711
4. Step 4: Simplify right side
   21,570x = 2,089,495,521
5. Step 5: Solve for x
   x = 2,089,495,521/21,570
6. Step 6: Final answer
   x = 96,870.45