Finding the Third Proportional to 87,642.75 and 191,870.25

Step by Step Solution

1. Step 1: Write the proportion equation
   87,642.75 : 191,870.25 = 191,870.25 : x
2. Step 2: Convert to fraction form
   87,642.75/191,870.25 = 191,870.25/x
3. Step 3: Cross multiply
   87,642.75x = 191,870.25 × 191,870.25
4. Step 4: Simplify right side
   87,642.75x = 36,814,192,835.06
5. Step 5: Solve for x
   x = 36,814,192,835.06/87,642.75
6. Step 6: Final answer
   x = 420,048.35