Finding the Third Proportional to 31,768.88 and 67,900.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,768.88 : 67,900.50 = 67,900.50 : x
2. Step 2: Convert to fraction form
   31,768.88/67,900.50 = 67,900.50/x
3. Step 3: Cross multiply
   31,768.88x = 67,900.50 × 67,900.50
4. Step 4: Simplify right side
   31,768.88x = 4,610,477,900.25
5. Step 5: Solve for x
   x = 4,610,477,900.25/31,768.88
6. Step 6: Final answer
   x = 145,125.63