Finding the Third Proportional to 186,810 and 405,034.50

Step by Step Solution

1. Step 1: Write the proportion equation
   186,810 : 405,034.50 = 405,034.50 : x
2. Step 2: Convert to fraction form
   186,810/405,034.50 = 405,034.50/x
3. Step 3: Cross multiply
   186,810x = 405,034.50 × 405,034.50
4. Step 4: Simplify right side
   186,810x = 164,052,946,190.25
5. Step 5: Solve for x
   x = 164,052,946,190.25/186,810
6. Step 6: Final answer
   x = 878,180.75