Finding the Third Proportional to 138,298.50 and 301,730

Step by Step Solution

1. Step 1: Write the proportion equation
   138,298.50 : 301,730 = 301,730 : x
2. Step 2: Convert to fraction form
   138,298.50/301,730 = 301,730/x
3. Step 3: Cross multiply
   138,298.50x = 301,730 × 301,730
4. Step 4: Simplify right side
   138,298.50x = 91,040,992,900
5. Step 5: Solve for x
   x = 91,040,992,900/138,298.50
6. Step 6: Final answer
   x = 658,293.42