Finding the Third Proportional to 47,709.75 and 70,139.25

Step by Step Solution

1. Step 1: Write the proportion equation
   47,709.75 : 70,139.25 = 70,139.25 : x
2. Step 2: Convert to fraction form
   47,709.75/70,139.25 = 70,139.25/x
3. Step 3: Cross multiply
   47,709.75x = 70,139.25 × 70,139.25
4. Step 4: Simplify right side
   47,709.75x = 4,919,514,390.56
5. Step 5: Solve for x
   x = 4,919,514,390.56/47,709.75
6. Step 6: Final answer
   x = 103,113.40