Finding the Third Proportional to 30,809.50 and 63,076

Step by Step Solution

1. Step 1: Write the proportion equation
   30,809.50 : 63,076 = 63,076 : x
2. Step 2: Convert to fraction form
   30,809.50/63,076 = 63,076/x
3. Step 3: Cross multiply
   30,809.50x = 63,076 × 63,076
4. Step 4: Simplify right side
   30,809.50x = 3,978,581,776
5. Step 5: Solve for x
   x = 3,978,581,776/30,809.50
6. Step 6: Final answer
   x = 129,134.90