Finding the Third Proportional to 40,307.63 and 54,720.56

Step by Step Solution

1. Step 1: Write the proportion equation
   40,307.63 : 54,720.56 = 54,720.56 : x
2. Step 2: Convert to fraction form
   40,307.63/54,720.56 = 54,720.56/x
3. Step 3: Cross multiply
   40,307.63x = 54,720.56 × 54,720.56
4. Step 4: Simplify right side
   40,307.63x = 2,994,339,960.32
5. Step 5: Solve for x
   x = 2,994,339,960.32/40,307.63
6. Step 6: Final answer
   x = 74,287.18