Finding the Third Proportional to 67,870 and 99,771

Step by Step Solution

1. Step 1: Write the proportion equation
   67,870 : 99,771 = 99,771 : x
2. Step 2: Convert to fraction form
   67,870/99,771 = 99,771/x
3. Step 3: Cross multiply
   67,870x = 99,771 × 99,771
4. Step 4: Simplify right side
   67,870x = 9,954,252,441
5. Step 5: Solve for x
   x = 9,954,252,441/67,870
6. Step 6: Final answer
   x = 146,666.46