Finding the Third Proportional to 207,710 and 451,870

Step by Step Solution

1. Step 1: Write the proportion equation
   207,710 : 451,870 = 451,870 : x
2. Step 2: Convert to fraction form
   207,710/451,870 = 451,870/x
3. Step 3: Cross multiply
   207,710x = 451,870 × 451,870
4. Step 4: Simplify right side
   207,710x = 204,186,496,900
5. Step 5: Solve for x
   x = 204,186,496,900/207,710
6. Step 6: Final answer
   x = 983,036.43