Finding the Third Proportional to 309,103 and 659,034.50

Step by Step Solution

1. Step 1: Write the proportion equation
   309,103 : 659,034.50 = 659,034.50 : x
2. Step 2: Convert to fraction form
   309,103/659,034.50 = 659,034.50/x
3. Step 3: Cross multiply
   309,103x = 659,034.50 × 659,034.50
4. Step 4: Simplify right side
   309,103x = 434,326,472,190.25
5. Step 5: Solve for x
   x = 434,326,472,190.25/309,103
6. Step 6: Final answer
   x = 1,405,118.92