Finding the Third Proportional to 129,897 and 266,233.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,897 : 266,233.50 = 266,233.50 : x
2. Step 2: Convert to fraction form
   129,897/266,233.50 = 266,233.50/x
3. Step 3: Cross multiply
   129,897x = 266,233.50 × 266,233.50
4. Step 4: Simplify right side
   129,897x = 70,880,276,522.25
5. Step 5: Solve for x
   x = 70,880,276,522.25/129,897
6. Step 6: Final answer
   x = 545,665.23