Finding the Third Proportional to 87,419.25 and 190,405.69

Step by Step Solution

1. Step 1: Write the proportion equation
   87,419.25 : 190,405.69 = 190,405.69 : x
2. Step 2: Convert to fraction form
   87,419.25/190,405.69 = 190,405.69/x
3. Step 3: Cross multiply
   87,419.25x = 190,405.69 × 190,405.69
4. Step 4: Simplify right side
   87,419.25x = 36,254,325,832.35
5. Step 5: Solve for x
   x = 36,254,325,832.35/87,419.25
6. Step 6: Final answer
   x = 414,717.88