Finding the Third Proportional to 31,690 and 47,436.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,690 : 47,436.25 = 47,436.25 : x
2. Step 2: Convert to fraction form
   31,690/47,436.25 = 47,436.25/x
3. Step 3: Cross multiply
   31,690x = 47,436.25 × 47,436.25
4. Step 4: Simplify right side
   31,690x = 2,250,197,814.06
5. Step 5: Solve for x
   x = 2,250,197,814.06/31,690
6. Step 6: Final answer
   x = 71,006.56