Finding the Third Proportional to 199,710 and 434,686.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,710 : 434,686.50 = 434,686.50 : x
2. Step 2: Convert to fraction form
   199,710/434,686.50 = 434,686.50/x
3. Step 3: Cross multiply
   199,710x = 434,686.50 × 434,686.50
4. Step 4: Simplify right side
   199,710x = 188,952,353,282.25
5. Step 5: Solve for x
   x = 188,952,353,282.25/199,710
6. Step 6: Final answer
   x = 946,133.66