Finding the Third Proportional to 31,815.75 and 68,548.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,815.75 : 68,548.88 = 68,548.88 : x
2. Step 2: Convert to fraction form
   31,815.75/68,548.88 = 68,548.88/x
3. Step 3: Cross multiply
   31,815.75x = 68,548.88 × 68,548.88
4. Step 4: Simplify right side
   31,815.75x = 4,698,948,263.77
5. Step 5: Solve for x
   x = 4,698,948,263.77/31,815.75
6. Step 6: Final answer
   x = 147,692.52