Finding the Third Proportional to 28,271.25 and 42,774.75

Step by Step Solution

1. Step 1: Write the proportion equation
   28,271.25 : 42,774.75 = 42,774.75 : x
2. Step 2: Convert to fraction form
   28,271.25/42,774.75 = 42,774.75/x
3. Step 3: Cross multiply
   28,271.25x = 42,774.75 × 42,774.75
4. Step 4: Simplify right side
   28,271.25x = 1,829,679,237.56
5. Step 5: Solve for x
   x = 1,829,679,237.56/28,271.25
6. Step 6: Final answer
   x = 64,718.72