Finding the Third Proportional to 672,768 and 1,011,978

Step by Step Solution

1. Step 1: Write the proportion equation
   672,768 : 1,011,978 = 1,011,978 : x
2. Step 2: Convert to fraction form
   672,768/1,011,978 = 1,011,978/x
3. Step 3: Cross multiply
   672,768x = 1,011,978 × 1,011,978
4. Step 4: Simplify right side
   672,768x = 1,024,099,472,484
5. Step 5: Solve for x
   x = 1,024,099,472,484/672,768
6. Step 6: Final answer
   x = 1,522,217.87