Finding the Third Proportional to 187,434 and 404,392.50

Step by Step Solution

1. Step 1: Write the proportion equation
   187,434 : 404,392.50 = 404,392.50 : x
2. Step 2: Convert to fraction form
   187,434/404,392.50 = 404,392.50/x
3. Step 3: Cross multiply
   187,434x = 404,392.50 × 404,392.50
4. Step 4: Simplify right side
   187,434x = 163,533,294,056.25
5. Step 5: Solve for x
   x = 163,533,294,056.25/187,434
6. Step 6: Final answer
   x = 872,484.68