Finding the Third Proportional to 65,516 and 139,612

Step by Step Solution

1. Step 1: Write the proportion equation
   65,516 : 139,612 = 139,612 : x
2. Step 2: Convert to fraction form
   65,516/139,612 = 139,612/x
3. Step 3: Cross multiply
   65,516x = 139,612 × 139,612
4. Step 4: Simplify right side
   65,516x = 19,491,510,544
5. Step 5: Solve for x
   x = 19,491,510,544/65,516
6. Step 6: Final answer
   x = 297,507.64