Finding the Third Proportional to 743,123 and 1,138,674

Step by Step Solution

1. Step 1: Write the proportion equation
   743,123 : 1,138,674 = 1,138,674 : x
2. Step 2: Convert to fraction form
   743,123/1,138,674 = 1,138,674/x
3. Step 3: Cross multiply
   743,123x = 1,138,674 × 1,138,674
4. Step 4: Simplify right side
   743,123x = 1,296,578,478,276
5. Step 5: Solve for x
   x = 1,296,578,478,276/743,123
6. Step 6: Final answer
   x = 1,744,769.68