Finding the Third Proportional to 45,515 and 71,242

Step by Step Solution

1. Step 1: Write the proportion equation
   45,515 : 71,242 = 71,242 : x
2. Step 2: Convert to fraction form
   45,515/71,242 = 71,242/x
3. Step 3: Cross multiply
   45,515x = 71,242 × 71,242
4. Step 4: Simplify right side
   45,515x = 5,075,422,564
5. Step 5: Solve for x
   x = 5,075,422,564/45,515
6. Step 6: Final answer
   x = 111,510.99