Finding the Third Proportional to 28,279.75 and 42,009.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,279.75 : 42,009.25 = 42,009.25 : x
2. Step 2: Convert to fraction form
   28,279.75/42,009.25 = 42,009.25/x
3. Step 3: Cross multiply
   28,279.75x = 42,009.25 × 42,009.25
4. Step 4: Simplify right side
   28,279.75x = 1,764,777,085.56
5. Step 5: Solve for x
   x = 1,764,777,085.56/28,279.75
6. Step 6: Final answer
   x = 62,404.27