Finding the Third Proportional to 186,311.50 and 404,129

Step by Step Solution

1. Step 1: Write the proportion equation
   186,311.50 : 404,129 = 404,129 : x
2. Step 2: Convert to fraction form
   186,311.50/404,129 = 404,129/x
3. Step 3: Cross multiply
   186,311.50x = 404,129 × 404,129
4. Step 4: Simplify right side
   186,311.50x = 163,320,248,641
5. Step 5: Solve for x
   x = 163,320,248,641/186,311.50
6. Step 6: Final answer
   x = 876,597.79