Finding the Third Proportional to 216,452 and 294,870

Step by Step Solution

1. Step 1: Write the proportion equation
   216,452 : 294,870 = 294,870 : x
2. Step 2: Convert to fraction form
   216,452/294,870 = 294,870/x
3. Step 3: Cross multiply
   216,452x = 294,870 × 294,870
4. Step 4: Simplify right side
   216,452x = 86,948,316,900
5. Step 5: Solve for x
   x = 86,948,316,900/216,452
6. Step 6: Final answer
   x = 401,697.91