Finding the Third Proportional to 111,484.50 and 245,109

Step by Step Solution

1. Step 1: Write the proportion equation
   111,484.50 : 245,109 = 245,109 : x
2. Step 2: Convert to fraction form
   111,484.50/245,109 = 245,109/x
3. Step 3: Cross multiply
   111,484.50x = 245,109 × 245,109
4. Step 4: Simplify right side
   111,484.50x = 60,078,421,881
5. Step 5: Solve for x
   x = 60,078,421,881/111,484.50
6. Step 6: Final answer
   x = 538,894.84