Finding the Third Proportional to 187,165.50 and 405,858

Step by Step Solution

1. Step 1: Write the proportion equation
   187,165.50 : 405,858 = 405,858 : x
2. Step 2: Convert to fraction form
   187,165.50/405,858 = 405,858/x
3. Step 3: Cross multiply
   187,165.50x = 405,858 × 405,858
4. Step 4: Simplify right side
   187,165.50x = 164,720,716,164
5. Step 5: Solve for x
   x = 164,720,716,164/187,165.50
6. Step 6: Final answer
   x = 880,080.55