Finding the Third Proportional to 216,918 and 447,673.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,918 : 447,673.50 = 447,673.50 : x
2. Step 2: Convert to fraction form
   216,918/447,673.50 = 447,673.50/x
3. Step 3: Cross multiply
   216,918x = 447,673.50 × 447,673.50
4. Step 4: Simplify right side
   216,918x = 200,411,562,602.25
5. Step 5: Solve for x
   x = 200,411,562,602.25/216,918
6. Step 6: Final answer
   x = 923,904.71