Finding the Third Proportional to 272,834 and 558,789

Step by Step Solution

1. Step 1: Write the proportion equation
   272,834 : 558,789 = 558,789 : x
2. Step 2: Convert to fraction form
   272,834/558,789 = 558,789/x
3. Step 3: Cross multiply
   272,834x = 558,789 × 558,789
4. Step 4: Simplify right side
   272,834x = 312,245,146,521
5. Step 5: Solve for x
   x = 312,245,146,521/272,834
6. Step 6: Final answer
   x = 1,144,451.01