Finding the Third Proportional to 65,572.50 and 140,698.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,572.50 : 140,698.50 = 140,698.50 : x
2. Step 2: Convert to fraction form
   65,572.50/140,698.50 = 140,698.50/x
3. Step 3: Cross multiply
   65,572.50x = 140,698.50 × 140,698.50
4. Step 4: Simplify right side
   65,572.50x = 19,796,067,902.25
5. Step 5: Solve for x
   x = 19,796,067,902.25/65,572.50
6. Step 6: Final answer
   x = 301,895.88