Finding the Third Proportional to 113,911 and 266,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,911 : 266,147.50 = 266,147.50 : x
2. Step 2: Convert to fraction form
   113,911/266,147.50 = 266,147.50/x
3. Step 3: Cross multiply
   113,911x = 266,147.50 × 266,147.50
4. Step 4: Simplify right side
   113,911x = 70,834,491,756.25
5. Step 5: Solve for x
   x = 70,834,491,756.25/113,911
6. Step 6: Final answer
   x = 621,840.66