Finding the Third Proportional to 138,417 and 301,846.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,417 : 301,846.50 = 301,846.50 : x
2. Step 2: Convert to fraction form
   138,417/301,846.50 = 301,846.50/x
3. Step 3: Cross multiply
   138,417x = 301,846.50 × 301,846.50
4. Step 4: Simplify right side
   138,417x = 91,111,309,562.25
5. Step 5: Solve for x
   x = 91,111,309,562.25/138,417
6. Step 6: Final answer
   x = 658,237.86