Finding the Third Proportional to 39,866 and 61,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,866 : 61,688.50 = 61,688.50 : x
2. Step 2: Convert to fraction form
   39,866/61,688.50 = 61,688.50/x
3. Step 3: Cross multiply
   39,866x = 61,688.50 × 61,688.50
4. Step 4: Simplify right side
   39,866x = 3,805,471,032.25
5. Step 5: Solve for x
   x = 3,805,471,032.25/39,866
6. Step 6: Final answer
   x = 95,456.56