Finding the Third Proportional to 42,269 and 65,415

Step by Step Solution

1. Step 1: Write the proportion equation
   42,269 : 65,415 = 65,415 : x
2. Step 2: Convert to fraction form
   42,269/65,415 = 65,415/x
3. Step 3: Cross multiply
   42,269x = 65,415 × 65,415
4. Step 4: Simplify right side
   42,269x = 4,279,122,225
5. Step 5: Solve for x
   x = 4,279,122,225/42,269
6. Step 6: Final answer
   x = 101,235.47