Finding the Third Proportional to 85,921 and 131,449.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,921 : 131,449.50 = 131,449.50 : x
2. Step 2: Convert to fraction form
   85,921/131,449.50 = 131,449.50/x
3. Step 3: Cross multiply
   85,921x = 131,449.50 × 131,449.50
4. Step 4: Simplify right side
   85,921x = 17,278,971,050.25
5. Step 5: Solve for x
   x = 17,278,971,050.25/85,921
6. Step 6: Final answer
   x = 201,103.00