Finding the Third Proportional to 138,417.75 and 301,849.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,417.75 : 301,849.50 = 301,849.50 : x
2. Step 2: Convert to fraction form
   138,417.75/301,849.50 = 301,849.50/x
3. Step 3: Cross multiply
   138,417.75x = 301,849.50 × 301,849.50
4. Step 4: Simplify right side
   138,417.75x = 91,113,120,650.25
5. Step 5: Solve for x
   x = 91,113,120,650.25/138,417.75
6. Step 6: Final answer
   x = 658,247.38