Finding the Third Proportional to 14,781 and 31,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,781 : 31,870.50 = 31,870.50 : x
2. Step 2: Convert to fraction form
   14,781/31,870.50 = 31,870.50/x
3. Step 3: Cross multiply
   14,781x = 31,870.50 × 31,870.50
4. Step 4: Simplify right side
   14,781x = 1,015,728,770.25
5. Step 5: Solve for x
   x = 1,015,728,770.25/14,781
6. Step 6: Final answer
   x = 68,718.54