Finding the Third Proportional to 1,966.78 and 4,882.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,966.78 : 4,882.78 = 4,882.78 : x
2. Step 2: Convert to fraction form
   1,966.78/4,882.78 = 4,882.78/x
3. Step 3: Cross multiply
   1,966.78x = 4,882.78 × 4,882.78
4. Step 4: Simplify right side
   1,966.78x = 23,841,552.74
5. Step 5: Solve for x
   x = 23,841,552.74/1,966.78
6. Step 6: Final answer
   x = 12,122.12