Finding the Third Proportional to 193,900.50 and 405,369

Step by Step Solution

1. Step 1: Write the proportion equation
   193,900.50 : 405,369 = 405,369 : x
2. Step 2: Convert to fraction form
   193,900.50/405,369 = 405,369/x
3. Step 3: Cross multiply
   193,900.50x = 405,369 × 405,369
4. Step 4: Simplify right side
   193,900.50x = 164,324,026,161
5. Step 5: Solve for x
   x = 164,324,026,161/193,900.50
6. Step 6: Final answer
   x = 847,465.72