Finding the Third Proportional to 310,901.50 and 669,368

Step by Step Solution

1. Step 1: Write the proportion equation
   310,901.50 : 669,368 = 669,368 : x
2. Step 2: Convert to fraction form
   310,901.50/669,368 = 669,368/x
3. Step 3: Cross multiply
   310,901.50x = 669,368 × 669,368
4. Step 4: Simplify right side
   310,901.50x = 448,053,519,424
5. Step 5: Solve for x
   x = 448,053,519,424/310,901.50
6. Step 6: Final answer
   x = 1,441,143.00