Finding the Third Proportional to 64,404 and 139,842

Step by Step Solution

1. Step 1: Write the proportion equation
   64,404 : 139,842 = 139,842 : x
2. Step 2: Convert to fraction form
   64,404/139,842 = 139,842/x
3. Step 3: Cross multiply
   64,404x = 139,842 × 139,842
4. Step 4: Simplify right side
   64,404x = 19,555,784,964
5. Step 5: Solve for x
   x = 19,555,784,964/64,404
6. Step 6: Final answer
   x = 303,642.40