Finding the Third Proportional to 187,520 and 404,359

Step by Step Solution

1. Step 1: Write the proportion equation
   187,520 : 404,359 = 404,359 : x
2. Step 2: Convert to fraction form
   187,520/404,359 = 404,359/x
3. Step 3: Cross multiply
   187,520x = 404,359 × 404,359
4. Step 4: Simplify right side
   187,520x = 163,506,200,881
5. Step 5: Solve for x
   x = 163,506,200,881/187,520
6. Step 6: Final answer
   x = 871,940.06