Finding the Third Proportional to 31,237.50 and 70,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,237.50 : 70,315.50 = 70,315.50 : x
2. Step 2: Convert to fraction form
   31,237.50/70,315.50 = 70,315.50/x
3. Step 3: Cross multiply
   31,237.50x = 70,315.50 × 70,315.50
4. Step 4: Simplify right side
   31,237.50x = 4,944,269,540.25
5. Step 5: Solve for x
   x = 4,944,269,540.25/31,237.50
6. Step 6: Final answer
   x = 158,279.94