Finding the Third Proportional to 39,355.50 and 72,973.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,355.50 : 72,973.50 = 72,973.50 : x
2. Step 2: Convert to fraction form
   39,355.50/72,973.50 = 72,973.50/x
3. Step 3: Cross multiply
   39,355.50x = 72,973.50 × 72,973.50
4. Step 4: Simplify right side
   39,355.50x = 5,325,131,702.25
5. Step 5: Solve for x
   x = 5,325,131,702.25/39,355.50
6. Step 6: Final answer
   x = 135,308.45