Finding the Third Proportional to 39,631 and 63,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,631 : 63,721.50 = 63,721.50 : x
2. Step 2: Convert to fraction form
   39,631/63,721.50 = 63,721.50/x
3. Step 3: Cross multiply
   39,631x = 63,721.50 × 63,721.50
4. Step 4: Simplify right side
   39,631x = 4,060,429,562.25
5. Step 5: Solve for x
   x = 4,060,429,562.25/39,631
6. Step 6: Final answer
   x = 102,455.89