Finding the Third Proportional to 100,610 and 209,488

Step by Step Solution

1. Step 1: Write the proportion equation
   100,610 : 209,488 = 209,488 : x
2. Step 2: Convert to fraction form
   100,610/209,488 = 209,488/x
3. Step 3: Cross multiply
   100,610x = 209,488 × 209,488
4. Step 4: Simplify right side
   100,610x = 43,885,222,144
5. Step 5: Solve for x
   x = 43,885,222,144/100,610
6. Step 6: Final answer
   x = 436,191.45