Finding the Third Proportional to 127,809.50 and 276,778

Step by Step Solution

1. Step 1: Write the proportion equation
   127,809.50 : 276,778 = 276,778 : x
2. Step 2: Convert to fraction form
   127,809.50/276,778 = 276,778/x
3. Step 3: Cross multiply
   127,809.50x = 276,778 × 276,778
4. Step 4: Simplify right side
   127,809.50x = 76,606,061,284
5. Step 5: Solve for x
   x = 76,606,061,284/127,809.50
6. Step 6: Final answer
   x = 599,376.90