Finding the Third Proportional to 187,454 and 404,434

Step by Step Solution

1. Step 1: Write the proportion equation
   187,454 : 404,434 = 404,434 : x
2. Step 2: Convert to fraction form
   187,454/404,434 = 404,434/x
3. Step 3: Cross multiply
   187,454x = 404,434 × 404,434
4. Step 4: Simplify right side
   187,454x = 163,566,860,356
5. Step 5: Solve for x
   x = 163,566,860,356/187,454
6. Step 6: Final answer
   x = 872,570.66