Finding the Third Proportional to 185,667.50 and 396,391

Step by Step Solution

1. Step 1: Write the proportion equation
   185,667.50 : 396,391 = 396,391 : x
2. Step 2: Convert to fraction form
   185,667.50/396,391 = 396,391/x
3. Step 3: Cross multiply
   185,667.50x = 396,391 × 396,391
4. Step 4: Simplify right side
   185,667.50x = 157,125,824,881
5. Step 5: Solve for x
   x = 157,125,824,881/185,667.50
6. Step 6: Final answer
   x = 846,275.33