Finding the Third Proportional to 412,780.50 and 843,057

Step by Step Solution

1. Step 1: Write the proportion equation
   412,780.50 : 843,057 = 843,057 : x
2. Step 2: Convert to fraction form
   412,780.50/843,057 = 843,057/x
3. Step 3: Cross multiply
   412,780.50x = 843,057 × 843,057
4. Step 4: Simplify right side
   412,780.50x = 710,745,105,249
5. Step 5: Solve for x
   x = 710,745,105,249/412,780.50
6. Step 6: Final answer
   x = 1,721,847.58