Finding the Third Proportional to 30,987.75 and 63,608.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,987.75 : 63,608.25 = 63,608.25 : x
2. Step 2: Convert to fraction form
   30,987.75/63,608.25 = 63,608.25/x
3. Step 3: Cross multiply
   30,987.75x = 63,608.25 × 63,608.25
4. Step 4: Simplify right side
   30,987.75x = 4,046,009,468.06
5. Step 5: Solve for x
   x = 4,046,009,468.06/30,987.75
6. Step 6: Final answer
   x = 130,568.03