Finding the Third Proportional to 603,243 and 843,761.25

Step by Step Solution

1. Step 1: Write the proportion equation
   603,243 : 843,761.25 = 843,761.25 : x
2. Step 2: Convert to fraction form
   603,243/843,761.25 = 843,761.25/x
3. Step 3: Cross multiply
   603,243x = 843,761.25 × 843,761.25
4. Step 4: Simplify right side
   603,243x = 711,933,047,001.56
5. Step 5: Solve for x
   x = 711,933,047,001.56/603,243
6. Step 6: Final answer
   x = 1,180,176.23