Finding the Third Proportional to 67,870 and 74,022.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,870 : 74,022.50 = 74,022.50 : x
2. Step 2: Convert to fraction form
   67,870/74,022.50 = 74,022.50/x
3. Step 3: Cross multiply
   67,870x = 74,022.50 × 74,022.50
4. Step 4: Simplify right side
   67,870x = 5,479,330,506.25
5. Step 5: Solve for x
   x = 5,479,330,506.25/67,870
6. Step 6: Final answer
   x = 80,732.73