Finding the Third Proportional to 548,379 and 847,459.69

Step by Step Solution

1. Step 1: Write the proportion equation
   548,379 : 847,459.69 = 847,459.69 : x
2. Step 2: Convert to fraction form
   548,379/847,459.69 = 847,459.69/x
3. Step 3: Cross multiply
   548,379x = 847,459.69 × 847,459.69
4. Step 4: Simplify right side
   548,379x = 718,187,921,937.60
5. Step 5: Solve for x
   x = 718,187,921,937.60/548,379
6. Step 6: Final answer
   x = 1,309,656.14