Finding the Third Proportional to 102,129 and 223,636.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,129 : 223,636.50 = 223,636.50 : x
2. Step 2: Convert to fraction form
   102,129/223,636.50 = 223,636.50/x
3. Step 3: Cross multiply
   102,129x = 223,636.50 × 223,636.50
4. Step 4: Simplify right side
   102,129x = 50,013,284,132.25
5. Step 5: Solve for x
   x = 50,013,284,132.25/102,129
6. Step 6: Final answer
   x = 489,706.98