Finding the Third Proportional to 300,791 and 668,829.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,791 : 668,829.50 = 668,829.50 : x
2. Step 2: Convert to fraction form
   300,791/668,829.50 = 668,829.50/x
3. Step 3: Cross multiply
   300,791x = 668,829.50 × 668,829.50
4. Step 4: Simplify right side
   300,791x = 447,332,900,070.25
5. Step 5: Solve for x
   x = 447,332,900,070.25/300,791
6. Step 6: Final answer
   x = 1,487,188.45