Finding the Third Proportional to 216,435 and 469,834.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,435 : 469,834.50 = 469,834.50 : x
2. Step 2: Convert to fraction form
   216,435/469,834.50 = 469,834.50/x
3. Step 3: Cross multiply
   216,435x = 469,834.50 × 469,834.50
4. Step 4: Simplify right side
   216,435x = 220,744,457,390.25
5. Step 5: Solve for x
   x = 220,744,457,390.25/216,435
6. Step 6: Final answer
   x = 1,019,911.09