Finding the Third Proportional to 64,262 and 139,459

Step by Step Solution

1. Step 1: Write the proportion equation
   64,262 : 139,459 = 139,459 : x
2. Step 2: Convert to fraction form
   64,262/139,459 = 139,459/x
3. Step 3: Cross multiply
   64,262x = 139,459 × 139,459
4. Step 4: Simplify right side
   64,262x = 19,448,812,681
5. Step 5: Solve for x
   x = 19,448,812,681/64,262
6. Step 6: Final answer
   x = 302,648.73