Finding the Third Proportional to 185,017.50 and 398,101.50

Step by Step Solution

1. Step 1: Write the proportion equation
   185,017.50 : 398,101.50 = 398,101.50 : x
2. Step 2: Convert to fraction form
   185,017.50/398,101.50 = 398,101.50/x
3. Step 3: Cross multiply
   185,017.50x = 398,101.50 × 398,101.50
4. Step 4: Simplify right side
   185,017.50x = 158,484,804,302.25
5. Step 5: Solve for x
   x = 158,484,804,302.25/185,017.50
6. Step 6: Final answer
   x = 856,593.59