Finding the Third Proportional to 188,163 and 405,870.75

Step by Step Solution

1. Step 1: Write the proportion equation
   188,163 : 405,870.75 = 405,870.75 : x
2. Step 2: Convert to fraction form
   188,163/405,870.75 = 405,870.75/x
3. Step 3: Cross multiply
   188,163x = 405,870.75 × 405,870.75
4. Step 4: Simplify right side
   188,163x = 164,731,065,705.56
5. Step 5: Solve for x
   x = 164,731,065,705.56/188,163
6. Step 6: Final answer
   x = 875,470.02