Finding the Third Proportional to 215,413 and 452,870

Step by Step Solution

1. Step 1: Write the proportion equation
   215,413 : 452,870 = 452,870 : x
2. Step 2: Convert to fraction form
   215,413/452,870 = 452,870/x
3. Step 3: Cross multiply
   215,413x = 452,870 × 452,870
4. Step 4: Simplify right side
   215,413x = 205,091,236,900
5. Step 5: Solve for x
   x = 205,091,236,900/215,413
6. Step 6: Final answer
   x = 952,083.84