Finding the Third Proportional to 210,322 and 447,428

Step by Step Solution

1. Step 1: Write the proportion equation
   210,322 : 447,428 = 447,428 : x
2. Step 2: Convert to fraction form
   210,322/447,428 = 447,428/x
3. Step 3: Cross multiply
   210,322x = 447,428 × 447,428
4. Step 4: Simplify right side
   210,322x = 200,191,815,184
5. Step 5: Solve for x
   x = 200,191,815,184/210,322
6. Step 6: Final answer
   x = 951,834.88