Finding the Third Proportional to 381,274 and 752,978

Step by Step Solution

1. Step 1: Write the proportion equation
   381,274 : 752,978 = 752,978 : x
2. Step 2: Convert to fraction form
   381,274/752,978 = 752,978/x
3. Step 3: Cross multiply
   381,274x = 752,978 × 752,978
4. Step 4: Simplify right side
   381,274x = 566,975,868,484
5. Step 5: Solve for x
   x = 566,975,868,484/381,274
6. Step 6: Final answer
   x = 1,487,056.21