Finding the Third Proportional to 216,942 and 333,673.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,942 : 333,673.50 = 333,673.50 : x
2. Step 2: Convert to fraction form
   216,942/333,673.50 = 333,673.50/x
3. Step 3: Cross multiply
   216,942x = 333,673.50 × 333,673.50
4. Step 4: Simplify right side
   216,942x = 111,338,004,602.25
5. Step 5: Solve for x
   x = 111,338,004,602.25/216,942
6. Step 6: Final answer
   x = 513,215.54