Finding the Third Proportional to 28,776 and 45,636

Step by Step Solution

1. Step 1: Write the proportion equation
   28,776 : 45,636 = 45,636 : x
2. Step 2: Convert to fraction form
   28,776/45,636 = 45,636/x
3. Step 3: Cross multiply
   28,776x = 45,636 × 45,636
4. Step 4: Simplify right side
   28,776x = 2,082,644,496
5. Step 5: Solve for x
   x = 2,082,644,496/28,776
6. Step 6: Final answer
   x = 72,374.36