Finding the Third Proportional to 31,063.50 and 69,148.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,063.50 : 69,148.69 = 69,148.69 : x
2. Step 2: Convert to fraction form
   31,063.50/69,148.69 = 69,148.69/x
3. Step 3: Cross multiply
   31,063.50x = 69,148.69 × 69,148.69
4. Step 4: Simplify right side
   31,063.50x = 4,781,540,982.97
5. Step 5: Solve for x
   x = 4,781,540,982.97/31,063.50
6. Step 6: Final answer
   x = 153,927.95