Finding the Third Proportional to 357,289.50 and 766,383

Step by Step Solution

1. Step 1: Write the proportion equation
   357,289.50 : 766,383 = 766,383 : x
2. Step 2: Convert to fraction form
   357,289.50/766,383 = 766,383/x
3. Step 3: Cross multiply
   357,289.50x = 766,383 × 766,383
4. Step 4: Simplify right side
   357,289.50x = 587,342,902,689
5. Step 5: Solve for x
   x = 587,342,902,689/357,289.50
6. Step 6: Final answer
   x = 1,643,885.15