Finding the Third Proportional to 113,211 and 264,397.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,211 : 264,397.50 = 264,397.50 : x
2. Step 2: Convert to fraction form
   113,211/264,397.50 = 264,397.50/x
3. Step 3: Cross multiply
   113,211x = 264,397.50 × 264,397.50
4. Step 4: Simplify right side
   113,211x = 69,906,038,006.25
5. Step 5: Solve for x
   x = 69,906,038,006.25/113,211
6. Step 6: Final answer
   x = 617,484.50