Finding the Third Proportional to 67,880.25 and 74,031.75

Step by Step Solution

1. Step 1: Write the proportion equation
   67,880.25 : 74,031.75 = 74,031.75 : x
2. Step 2: Convert to fraction form
   67,880.25/74,031.75 = 74,031.75/x
3. Step 3: Cross multiply
   67,880.25x = 74,031.75 × 74,031.75
4. Step 4: Simplify right side
   67,880.25x = 5,480,700,008.06
5. Step 5: Solve for x
   x = 5,480,700,008.06/67,880.25
6. Step 6: Final answer
   x = 80,740.72