Finding the Third Proportional to 189,856.50 and 404,253

Step by Step Solution

1. Step 1: Write the proportion equation
   189,856.50 : 404,253 = 404,253 : x
2. Step 2: Convert to fraction form
   189,856.50/404,253 = 404,253/x
3. Step 3: Cross multiply
   189,856.50x = 404,253 × 404,253
4. Step 4: Simplify right side
   189,856.50x = 163,420,488,009
5. Step 5: Solve for x
   x = 163,420,488,009/189,856.50
6. Step 6: Final answer
   x = 860,757.93