Finding the Third Proportional to 57,711 and 90,211.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,711 : 90,211.50 = 90,211.50 : x
2. Step 2: Convert to fraction form
   57,711/90,211.50 = 90,211.50/x
3. Step 3: Cross multiply
   57,711x = 90,211.50 × 90,211.50
4. Step 4: Simplify right side
   57,711x = 8,138,114,732.25
5. Step 5: Solve for x
   x = 8,138,114,732.25/57,711
6. Step 6: Final answer
   x = 141,014.97