Finding the Third Proportional to 187,671 and 276,541.50

Step by Step Solution

1. Step 1: Write the proportion equation
   187,671 : 276,541.50 = 276,541.50 : x
2. Step 2: Convert to fraction form
   187,671/276,541.50 = 276,541.50/x
3. Step 3: Cross multiply
   187,671x = 276,541.50 × 276,541.50
4. Step 4: Simplify right side
   187,671x = 76,475,201,222.25
5. Step 5: Solve for x
   x = 76,475,201,222.25/187,671
6. Step 6: Final answer
   x = 407,496.10