Finding the Third Proportional to 67,826 and 90,615

Step by Step Solution

1. Step 1: Write the proportion equation
   67,826 : 90,615 = 90,615 : x
2. Step 2: Convert to fraction form
   67,826/90,615 = 90,615/x
3. Step 3: Cross multiply
   67,826x = 90,615 × 90,615
4. Step 4: Simplify right side
   67,826x = 8,211,078,225
5. Step 5: Solve for x
   x = 8,211,078,225/67,826
6. Step 6: Final answer
   x = 121,060.92