Finding the Third Proportional to 100,570.50 and 209,484

Step by Step Solution

1. Step 1: Write the proportion equation
   100,570.50 : 209,484 = 209,484 : x
2. Step 2: Convert to fraction form
   100,570.50/209,484 = 209,484/x
3. Step 3: Cross multiply
   100,570.50x = 209,484 × 209,484
4. Step 4: Simplify right side
   100,570.50x = 43,883,546,256
5. Step 5: Solve for x
   x = 43,883,546,256/100,570.50
6. Step 6: Final answer
   x = 436,346.11