Finding the Third Proportional to 31,179.94 and 68,191.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,179.94 : 68,191.88 = 68,191.88 : x
2. Step 2: Convert to fraction form
   31,179.94/68,191.88 = 68,191.88/x
3. Step 3: Cross multiply
   31,179.94x = 68,191.88 × 68,191.88
4. Step 4: Simplify right side
   31,179.94x = 4,650,131,816.02
5. Step 5: Solve for x
   x = 4,650,131,816.02/31,179.94
6. Step 6: Final answer
   x = 149,138.59