Finding the Third Proportional to 50,720 and 67,316

Step by Step Solution

1. Step 1: Write the proportion equation
   50,720 : 67,316 = 67,316 : x
2. Step 2: Convert to fraction form
   50,720/67,316 = 67,316/x
3. Step 3: Cross multiply
   50,720x = 67,316 × 67,316
4. Step 4: Simplify right side
   50,720x = 4,531,443,856
5. Step 5: Solve for x
   x = 4,531,443,856/50,720
6. Step 6: Final answer
   x = 89,342.35