Finding the Third Proportional to 31,063.50 and 42,313.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,063.50 : 42,313.50 = 42,313.50 : x
2. Step 2: Convert to fraction form
   31,063.50/42,313.50 = 42,313.50/x
3. Step 3: Cross multiply
   31,063.50x = 42,313.50 × 42,313.50
4. Step 4: Simplify right side
   31,063.50x = 1,790,432,282.25
5. Step 5: Solve for x
   x = 1,790,432,282.25/31,063.50
6. Step 6: Final answer
   x = 57,637.82