Finding the Third Proportional to 190,842 and 397,381.50

Step by Step Solution

1. Step 1: Write the proportion equation
   190,842 : 397,381.50 = 397,381.50 : x
2. Step 2: Convert to fraction form
   190,842/397,381.50 = 397,381.50/x
3. Step 3: Cross multiply
   190,842x = 397,381.50 × 397,381.50
4. Step 4: Simplify right side
   190,842x = 157,912,056,542.25
5. Step 5: Solve for x
   x = 157,912,056,542.25/190,842
6. Step 6: Final answer
   x = 827,449.18