Finding the Third Proportional to 57,980.81 and 123,069.38

Step by Step Solution

1. Step 1: Write the proportion equation
   57,980.81 : 123,069.38 = 123,069.38 : x
2. Step 2: Convert to fraction form
   57,980.81/123,069.38 = 123,069.38/x
3. Step 3: Cross multiply
   57,980.81x = 123,069.38 × 123,069.38
4. Step 4: Simplify right side
   57,980.81x = 15,146,071,062.89
5. Step 5: Solve for x
   x = 15,146,071,062.89/57,980.81
6. Step 6: Final answer
   x = 261,225.57