Finding the Third Proportional to 435,669 and 666,319.50

Step by Step Solution

1. Step 1: Write the proportion equation
   435,669 : 666,319.50 = 666,319.50 : x
2. Step 2: Convert to fraction form
   435,669/666,319.50 = 666,319.50/x
3. Step 3: Cross multiply
   435,669x = 666,319.50 × 666,319.50
4. Step 4: Simplify right side
   435,669x = 443,981,676,080.25
5. Step 5: Solve for x
   x = 443,981,676,080.25/435,669
6. Step 6: Final answer
   x = 1,019,080.26