Finding the Third Proportional to 190,273.50 and 418,212

Step by Step Solution

1. Step 1: Write the proportion equation
   190,273.50 : 418,212 = 418,212 : x
2. Step 2: Convert to fraction form
   190,273.50/418,212 = 418,212/x
3. Step 3: Cross multiply
   190,273.50x = 418,212 × 418,212
4. Step 4: Simplify right side
   190,273.50x = 174,901,276,944
5. Step 5: Solve for x
   x = 174,901,276,944/190,273.50
6. Step 6: Final answer
   x = 919,209.86