Finding the Third Proportional to 43,161 and 67,820

Step by Step Solution

1. Step 1: Write the proportion equation
   43,161 : 67,820 = 67,820 : x
2. Step 2: Convert to fraction form
   43,161/67,820 = 67,820/x
3. Step 3: Cross multiply
   43,161x = 67,820 × 67,820
4. Step 4: Simplify right side
   43,161x = 4,599,552,400
5. Step 5: Solve for x
   x = 4,599,552,400/43,161
6. Step 6: Final answer
   x = 106,567.33