Finding the Third Proportional to 28,722.50 and 42,082.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,722.50 : 42,082.50 = 42,082.50 : x
2. Step 2: Convert to fraction form
   28,722.50/42,082.50 = 42,082.50/x
3. Step 3: Cross multiply
   28,722.50x = 42,082.50 × 42,082.50
4. Step 4: Simplify right side
   28,722.50x = 1,770,936,806.25
5. Step 5: Solve for x
   x = 1,770,936,806.25/28,722.50
6. Step 6: Final answer
   x = 61,656.78