Finding the Third Proportional to 31,873.50 and 65,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,873.50 : 65,812.50 = 65,812.50 : x
2. Step 2: Convert to fraction form
   31,873.50/65,812.50 = 65,812.50/x
3. Step 3: Cross multiply
   31,873.50x = 65,812.50 × 65,812.50
4. Step 4: Simplify right side
   31,873.50x = 4,331,285,156.25
5. Step 5: Solve for x
   x = 4,331,285,156.25/31,873.50
6. Step 6: Final answer
   x = 135,889.85