Finding the Third Proportional to 64,395 and 140,987.25

Step by Step Solution

1. Step 1: Write the proportion equation
   64,395 : 140,987.25 = 140,987.25 : x
2. Step 2: Convert to fraction form
   64,395/140,987.25 = 140,987.25/x
3. Step 3: Cross multiply
   64,395x = 140,987.25 × 140,987.25
4. Step 4: Simplify right side
   64,395x = 19,877,404,662.56
5. Step 5: Solve for x
   x = 19,877,404,662.56/64,395
6. Step 6: Final answer
   x = 308,679.32