Finding the Third Proportional to 28,780 and 45,222

Step by Step Solution

1. Step 1: Write the proportion equation
   28,780 : 45,222 = 45,222 : x
2. Step 2: Convert to fraction form
   28,780/45,222 = 45,222/x
3. Step 3: Cross multiply
   28,780x = 45,222 × 45,222
4. Step 4: Simplify right side
   28,780x = 2,045,029,284
5. Step 5: Solve for x
   x = 2,045,029,284/28,780
6. Step 6: Final answer
   x = 71,057.31