Finding the Third Proportional to 129,425.50 and 265,124

Step by Step Solution

1. Step 1: Write the proportion equation
   129,425.50 : 265,124 = 265,124 : x
2. Step 2: Convert to fraction form
   129,425.50/265,124 = 265,124/x
3. Step 3: Cross multiply
   129,425.50x = 265,124 × 265,124
4. Step 4: Simplify right side
   129,425.50x = 70,290,735,376
5. Step 5: Solve for x
   x = 70,290,735,376/129,425.50
6. Step 6: Final answer
   x = 543,098.04