Finding the Third Proportional to 67,422 and 90,762

Step by Step Solution

1. Step 1: Write the proportion equation
   67,422 : 90,762 = 90,762 : x
2. Step 2: Convert to fraction form
   67,422/90,762 = 90,762/x
3. Step 3: Cross multiply
   67,422x = 90,762 × 90,762
4. Step 4: Simplify right side
   67,422x = 8,237,740,644
5. Step 5: Solve for x
   x = 8,237,740,644/67,422
6. Step 6: Final answer
   x = 122,181.79