Finding the Third Proportional to 71,315.44 and 99,698.34

Step by Step Solution

1. Step 1: Write the proportion equation
   71,315.44 : 99,698.34 = 99,698.34 : x
2. Step 2: Convert to fraction form
   71,315.44/99,698.34 = 99,698.34/x
3. Step 3: Cross multiply
   71,315.44x = 99,698.34 × 99,698.34
4. Step 4: Simplify right side
   71,315.44x = 9,939,759,746.49
5. Step 5: Solve for x
   x = 9,939,759,746.49/71,315.44
6. Step 6: Final answer
   x = 139,377.39