Finding the Third Proportional to 116,891 and 253,707.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,891 : 253,707.50 = 253,707.50 : x
2. Step 2: Convert to fraction form
   116,891/253,707.50 = 253,707.50/x
3. Step 3: Cross multiply
   116,891x = 253,707.50 × 253,707.50
4. Step 4: Simplify right side
   116,891x = 64,367,495,556.25
5. Step 5: Solve for x
   x = 64,367,495,556.25/116,891
6. Step 6: Final answer
   x = 550,662.55