Finding the Third Proportional to 31,131.94 and 68,805.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,131.94 : 68,805.56 = 68,805.56 : x
2. Step 2: Convert to fraction form
   31,131.94/68,805.56 = 68,805.56/x
3. Step 3: Cross multiply
   31,131.94x = 68,805.56 × 68,805.56
4. Step 4: Simplify right side
   31,131.94x = 4,734,205,430.94
5. Step 5: Solve for x
   x = 4,734,205,430.94/31,131.94
6. Step 6: Final answer
   x = 152,069.09