Finding the Third Proportional to 67,877.16 and 89,258.63

Step by Step Solution

1. Step 1: Write the proportion equation
   67,877.16 : 89,258.63 = 89,258.63 : x
2. Step 2: Convert to fraction form
   67,877.16/89,258.63 = 89,258.63/x
3. Step 3: Cross multiply
   67,877.16x = 89,258.63 × 89,258.63
4. Step 4: Simplify right side
   67,877.16x = 7,967,102,136.89
5. Step 5: Solve for x
   x = 7,967,102,136.89/67,877.16
6. Step 6: Final answer
   x = 117,375.31