Finding the Third Proportional to 190,548 and 406,399.50

Step by Step Solution

1. Step 1: Write the proportion equation
   190,548 : 406,399.50 = 406,399.50 : x
2. Step 2: Convert to fraction form
   190,548/406,399.50 = 406,399.50/x
3. Step 3: Cross multiply
   190,548x = 406,399.50 × 406,399.50
4. Step 4: Simplify right side
   190,548x = 165,160,553,600.25
5. Step 5: Solve for x
   x = 165,160,553,600.25/190,548
6. Step 6: Final answer
   x = 866,766.14