Finding the Third Proportional to 359,128.69 and 771,175.69

Step by Step Solution

1. Step 1: Write the proportion equation
   359,128.69 : 771,175.69 = 771,175.69 : x
2. Step 2: Convert to fraction form
   359,128.69/771,175.69 = 771,175.69/x
3. Step 3: Cross multiply
   359,128.69x = 771,175.69 × 771,175.69
4. Step 4: Simplify right side
   359,128.69x = 594,711,940,991.10
5. Step 5: Solve for x
   x = 594,711,940,991.10/359,128.69
6. Step 6: Final answer
   x = 1,655,985.62