Finding the Third Proportional to 28,486 and 42,715

Step by Step Solution

1. Step 1: Write the proportion equation
   28,486 : 42,715 = 42,715 : x
2. Step 2: Convert to fraction form
   28,486/42,715 = 42,715/x
3. Step 3: Cross multiply
   28,486x = 42,715 × 42,715
4. Step 4: Simplify right side
   28,486x = 1,824,571,225
5. Step 5: Solve for x
   x = 1,824,571,225/28,486
6. Step 6: Final answer
   x = 64,051.51