Finding the Third Proportional to 185,139 and 404,142.75

Step by Step Solution

1. Step 1: Write the proportion equation
   185,139 : 404,142.75 = 404,142.75 : x
2. Step 2: Convert to fraction form
   185,139/404,142.75 = 404,142.75/x
3. Step 3: Cross multiply
   185,139x = 404,142.75 × 404,142.75
4. Step 4: Simplify right side
   185,139x = 163,331,362,377.56
5. Step 5: Solve for x
   x = 163,331,362,377.56/185,139
6. Step 6: Final answer
   x = 882,209.38