Finding the Third Proportional to 190,432 and 418,225.50

Step by Step Solution

1. Step 1: Write the proportion equation
   190,432 : 418,225.50 = 418,225.50 : x
2. Step 2: Convert to fraction form
   190,432/418,225.50 = 418,225.50/x
3. Step 3: Cross multiply
   190,432x = 418,225.50 × 418,225.50
4. Step 4: Simplify right side
   190,432x = 174,912,568,850.25
5. Step 5: Solve for x
   x = 174,912,568,850.25/190,432
6. Step 6: Final answer
   x = 918,504.08