Finding the Third Proportional to 143,793 and 308,403

Step by Step Solution

1. Step 1: Write the proportion equation
   143,793 : 308,403 = 308,403 : x
2. Step 2: Convert to fraction form
   143,793/308,403 = 308,403/x
3. Step 3: Cross multiply
   143,793x = 308,403 × 308,403
4. Step 4: Simplify right side
   143,793x = 95,112,410,409
5. Step 5: Solve for x
   x = 95,112,410,409/143,793
6. Step 6: Final answer
   x = 661,453.69