Finding the Third Proportional to 178,659 and 276,385.50

Step by Step Solution

1. Step 1: Write the proportion equation
   178,659 : 276,385.50 = 276,385.50 : x
2. Step 2: Convert to fraction form
   178,659/276,385.50 = 276,385.50/x
3. Step 3: Cross multiply
   178,659x = 276,385.50 × 276,385.50
4. Step 4: Simplify right side
   178,659x = 76,388,944,610.25
5. Step 5: Solve for x
   x = 76,388,944,610.25/178,659
6. Step 6: Final answer
   x = 427,568.41