Finding the Third Proportional to 209,070 and 458,172

Step by Step Solution

1. Step 1: Write the proportion equation
   209,070 : 458,172 = 458,172 : x
2. Step 2: Convert to fraction form
   209,070/458,172 = 458,172/x
3. Step 3: Cross multiply
   209,070x = 458,172 × 458,172
4. Step 4: Simplify right side
   209,070x = 209,921,581,584
5. Step 5: Solve for x
   x = 209,921,581,584/209,070
6. Step 6: Final answer
   x = 1,004,073.19