Finding the Third Proportional to 64,472 and 139,960

Step by Step Solution

1. Step 1: Write the proportion equation
   64,472 : 139,960 = 139,960 : x
2. Step 2: Convert to fraction form
   64,472/139,960 = 139,960/x
3. Step 3: Cross multiply
   64,472x = 139,960 × 139,960
4. Step 4: Simplify right side
   64,472x = 19,588,801,600
5. Step 5: Solve for x
   x = 19,588,801,600/64,472
6. Step 6: Final answer
   x = 303,834.25