Finding the Third Proportional to 186,841.69 and 290,105.30

Step by Step Solution

1. Step 1: Write the proportion equation
   186,841.69 : 290,105.30 = 290,105.30 : x
2. Step 2: Convert to fraction form
   186,841.69/290,105.30 = 290,105.30/x
3. Step 3: Cross multiply
   186,841.69x = 290,105.30 × 290,105.30
4. Step 4: Simplify right side
   186,841.69x = 84,161,083,274.93
5. Step 5: Solve for x
   x = 84,161,083,274.93/186,841.69
6. Step 6: Final answer
   x = 450,440.61