Finding the Third Proportional to 20,157.50 and 30,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,157.50 : 30,256.50 = 30,256.50 : x
2. Step 2: Convert to fraction form
   20,157.50/30,256.50 = 30,256.50/x
3. Step 3: Cross multiply
   20,157.50x = 30,256.50 × 30,256.50
4. Step 4: Simplify right side
   20,157.50x = 915,455,792.25
5. Step 5: Solve for x
   x = 915,455,792.25/20,157.50
6. Step 6: Final answer
   x = 45,415.15