Finding the Third Proportional to 81,987 and 120,064.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,987 : 120,064.50 = 120,064.50 : x
2. Step 2: Convert to fraction form
   81,987/120,064.50 = 120,064.50/x
3. Step 3: Cross multiply
   81,987x = 120,064.50 × 120,064.50
4. Step 4: Simplify right side
   81,987x = 14,415,484,160.25
5. Step 5: Solve for x
   x = 14,415,484,160.25/81,987
6. Step 6: Final answer
   x = 175,826.46