Finding the Third Proportional to 357,909 and 767,050.50

Step by Step Solution

1. Step 1: Write the proportion equation
   357,909 : 767,050.50 = 767,050.50 : x
2. Step 2: Convert to fraction form
   357,909/767,050.50 = 767,050.50/x
3. Step 3: Cross multiply
   357,909x = 767,050.50 × 767,050.50
4. Step 4: Simplify right side
   357,909x = 588,366,469,550.25
5. Step 5: Solve for x
   x = 588,366,469,550.25/357,909
6. Step 6: Final answer
   x = 1,643,899.62