Finding the Third Proportional to 548,070 and 819,870

Step by Step Solution

1. Step 1: Write the proportion equation
   548,070 : 819,870 = 819,870 : x
2. Step 2: Convert to fraction form
   548,070/819,870 = 819,870/x
3. Step 3: Cross multiply
   548,070x = 819,870 × 819,870
4. Step 4: Simplify right side
   548,070x = 672,186,816,900
5. Step 5: Solve for x
   x = 672,186,816,900/548,070
6. Step 6: Final answer
   x = 1,226,461.61