Finding the Third Proportional to 67,873.50 and 90,648

Step by Step Solution

1. Step 1: Write the proportion equation
   67,873.50 : 90,648 = 90,648 : x
2. Step 2: Convert to fraction form
   67,873.50/90,648 = 90,648/x
3. Step 3: Cross multiply
   67,873.50x = 90,648 × 90,648
4. Step 4: Simplify right side
   67,873.50x = 8,217,059,904
5. Step 5: Solve for x
   x = 8,217,059,904/67,873.50
6. Step 6: Final answer
   x = 121,064.33