Finding the Third Proportional to 42,720.75 and 91,759.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,720.75 : 91,759.50 = 91,759.50 : x
2. Step 2: Convert to fraction form
   42,720.75/91,759.50 = 91,759.50/x
3. Step 3: Cross multiply
   42,720.75x = 91,759.50 × 91,759.50
4. Step 4: Simplify right side
   42,720.75x = 8,419,805,840.25
5. Step 5: Solve for x
   x = 8,419,805,840.25/42,720.75
6. Step 6: Final answer
   x = 197,089.37