Finding the Third Proportional to 306,760.50 and 656,166

Step by Step Solution

1. Step 1: Write the proportion equation
   306,760.50 : 656,166 = 656,166 : x
2. Step 2: Convert to fraction form
   306,760.50/656,166 = 656,166/x
3. Step 3: Cross multiply
   306,760.50x = 656,166 × 656,166
4. Step 4: Simplify right side
   306,760.50x = 430,553,819,556
5. Step 5: Solve for x
   x = 430,553,819,556/306,760.50
6. Step 6: Final answer
   x = 1,403,550.39