Finding the Third Proportional to 188,087 and 405,698.50

Step by Step Solution

1. Step 1: Write the proportion equation
   188,087 : 405,698.50 = 405,698.50 : x
2. Step 2: Convert to fraction form
   188,087/405,698.50 = 405,698.50/x
3. Step 3: Cross multiply
   188,087x = 405,698.50 × 405,698.50
4. Step 4: Simplify right side
   188,087x = 164,591,272,902.25
5. Step 5: Solve for x
   x = 164,591,272,902.25/188,087
6. Step 6: Final answer
   x = 875,080.54