Finding the Third Proportional to 15,557.75 and 34,139.25

Step by Step Solution

1. Step 1: Write the proportion equation
   15,557.75 : 34,139.25 = 34,139.25 : x
2. Step 2: Convert to fraction form
   15,557.75/34,139.25 = 34,139.25/x
3. Step 3: Cross multiply
   15,557.75x = 34,139.25 × 34,139.25
4. Step 4: Simplify right side
   15,557.75x = 1,165,488,390.56
5. Step 5: Solve for x
   x = 1,165,488,390.56/15,557.75
6. Step 6: Final answer
   x = 74,913.69