Finding the Third Proportional to 31,987.41 and 69,647.34

Step by Step Solution

1. Step 1: Write the proportion equation
   31,987.41 : 69,647.34 = 69,647.34 : x
2. Step 2: Convert to fraction form
   31,987.41/69,647.34 = 69,647.34/x
3. Step 3: Cross multiply
   31,987.41x = 69,647.34 × 69,647.34
4. Step 4: Simplify right side
   31,987.41x = 4,850,752,491.43
5. Step 5: Solve for x
   x = 4,850,752,491.43/31,987.41
6. Step 6: Final answer
   x = 151,645.70