Finding the Third Proportional to 30,900 and 63,988

Step by Step Solution

1. Step 1: Write the proportion equation
   30,900 : 63,988 = 63,988 : x
2. Step 2: Convert to fraction form
   30,900/63,988 = 63,988/x
3. Step 3: Cross multiply
   30,900x = 63,988 × 63,988
4. Step 4: Simplify right side
   30,900x = 4,094,464,144
5. Step 5: Solve for x
   x = 4,094,464,144/30,900
6. Step 6: Final answer
   x = 132,506.93