Finding the Third Proportional to 474,930 and 668,821.50

Step by Step Solution

1. Step 1: Write the proportion equation
   474,930 : 668,821.50 = 668,821.50 : x
2. Step 2: Convert to fraction form
   474,930/668,821.50 = 668,821.50/x
3. Step 3: Cross multiply
   474,930x = 668,821.50 × 668,821.50
4. Step 4: Simplify right side
   474,930x = 447,322,198,862.25
5. Step 5: Solve for x
   x = 447,322,198,862.25/474,930
6. Step 6: Final answer
   x = 941,869.75