Finding the Third Proportional to 28,119.75 and 42,468.75

Step by Step Solution

1. Step 1: Write the proportion equation
   28,119.75 : 42,468.75 = 42,468.75 : x
2. Step 2: Convert to fraction form
   28,119.75/42,468.75 = 42,468.75/x
3. Step 3: Cross multiply
   28,119.75x = 42,468.75 × 42,468.75
4. Step 4: Simplify right side
   28,119.75x = 1,803,594,726.56
5. Step 5: Solve for x
   x = 1,803,594,726.56/28,119.75
6. Step 6: Final answer
   x = 64,139.79