Finding the Third Proportional to 427,429.88 and 676,822.69

Step by Step Solution

1. Step 1: Write the proportion equation
   427,429.88 : 676,822.69 = 676,822.69 : x
2. Step 2: Convert to fraction form
   427,429.88/676,822.69 = 676,822.69/x
3. Step 3: Cross multiply
   427,429.88x = 676,822.69 × 676,822.69
4. Step 4: Simplify right side
   427,429.88x = 458,088,950,314.72
5. Step 5: Solve for x
   x = 458,088,950,314.72/427,429.88
6. Step 6: Final answer
   x = 1,071,728.90