Finding the Third Proportional to 31,260 and 63,676.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,260 : 63,676.50 = 63,676.50 : x
2. Step 2: Convert to fraction form
   31,260/63,676.50 = 63,676.50/x
3. Step 3: Cross multiply
   31,260x = 63,676.50 × 63,676.50
4. Step 4: Simplify right side
   31,260x = 4,054,696,652.25
5. Step 5: Solve for x
   x = 4,054,696,652.25/31,260
6. Step 6: Final answer
   x = 129,708.79