Finding the Third Proportional to 78,616.50 and 124,546.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,616.50 : 124,546.50 = 124,546.50 : x
2. Step 2: Convert to fraction form
   78,616.50/124,546.50 = 124,546.50/x
3. Step 3: Cross multiply
   78,616.50x = 124,546.50 × 124,546.50
4. Step 4: Simplify right side
   78,616.50x = 15,511,830,662.25
5. Step 5: Solve for x
   x = 15,511,830,662.25/78,616.50
6. Step 6: Final answer
   x = 197,310.12