Finding the Third Proportional to 31,171.50 and 67,901.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,171.50 : 67,901.63 = 67,901.63 : x
2. Step 2: Convert to fraction form
   31,171.50/67,901.63 = 67,901.63/x
3. Step 3: Cross multiply
   31,171.50x = 67,901.63 × 67,901.63
4. Step 4: Simplify right side
   31,171.50x = 4,610,630,677.64
5. Step 5: Solve for x
   x = 4,610,630,677.64/31,171.50
6. Step 6: Final answer
   x = 147,911.74