Finding the Third Proportional to 67,406 and 89,443

Step by Step Solution

1. Step 1: Write the proportion equation
   67,406 : 89,443 = 89,443 : x
2. Step 2: Convert to fraction form
   67,406/89,443 = 89,443/x
3. Step 3: Cross multiply
   67,406x = 89,443 × 89,443
4. Step 4: Simplify right side
   67,406x = 8,000,050,249
5. Step 5: Solve for x
   x = 8,000,050,249/67,406
6. Step 6: Final answer
   x = 118,684.54