Finding the Third Proportional to 678,105 and 929,819.25

Step by Step Solution

1. Step 1: Write the proportion equation
   678,105 : 929,819.25 = 929,819.25 : x
2. Step 2: Convert to fraction form
   678,105/929,819.25 = 929,819.25/x
3. Step 3: Cross multiply
   678,105x = 929,819.25 × 929,819.25
4. Step 4: Simplify right side
   678,105x = 864,563,837,670.56
5. Step 5: Solve for x
   x = 864,563,837,670.56/678,105
6. Step 6: Final answer
   x = 1,274,970.45